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  • 61 προάγω

    προάγω [ᾰ], [tense] fut. - άξω: [tense] pf. [voice] Act.
    A

    προῆχα D.19.18

    , 25.8, Paus.3.11.10 :—[voice] Med., v. infr.: [tense] pf. [voice] Pass. in med. sense, v. infr. 1.7 :— lead forward or onward,

    μιν ἐς τὰ οἰκία Hdt.3.148

    , etc.; escort on their way, Id.8.132;

    τοὺς πεζοὺς οὐ πολλὴν ὁδόν X.Cyr.3.3.23

     :—[voice] Pass., to be led on,

    προαγομένης τῆς πόλεως ἐπὶ συμφοράς And.2.9

    .
    2 carry on,

    αἱμασιάν D.55.27

    ; produce, Plot.3.7.6 :—[voice] Pass., [τάξις] εἰς ὀξὺ προηγμένη brought to a point, Arr.Tact.16.8.
    c increase, raise a dose,

    ἐπὶ ἓξ κοτύλας Ruf.Fr.68

     (v.l. προς-).
    3 bring forward, νεκρόν εἰς τὸ φανερόν, τι εἰς τὸ πρόσθεν, Pl.Lg. 960a, Plt. 262c;

    τὴν φύσιν εἰς φῶς πᾶσιν Id.Ep. 341d

    ;

    βουλὴν ἀπόρρητον εἰς φῶς ἡλίου Plu.2.552d

    ; οἱ προαγαγόντες εἰς φῶς, = οἱ γονεῖς, Poll.3.8, cf. Hld.7.23; call up an apparition, Thessal. in Cat.Cod.Astr.8(3).137.
    b bring before a tribunal, SIG 826G 22 (ii B.C., [voice] Pass.);

    π. δάνειον POxy.1562.14

     (iii A.D.).
    4 lead on, induce, persuade,

    δόλῳτινὰς π. Hdt.9.90

    ;

    ὡς ἡχρεία προάγει Th.3.59

    : with inf. added, κινδυνεύειν τινὰ π. ib.45;

    ἐγὼ προήγαγον ὑμᾶς ἄξια τῶν προγόνων φρονεῖν D.18.206

    : with Preps.,

    π. θυμὸν ἐς ἀμπλακίην Thgn. 386

     (nisi leg. παράγει)

    ; τινὰς ἐς λόγους Pl.Ti. 22a

    ;

    εἰς μῖσος X.HG 3.5.2

    ; τὰς συγγενείας εἰς ἔχθραν, εἰς ἄνοιαν τὴν πόλιν, Isoc.4.174, 8.121;

    εἰς ὀργὴν ἢ φθόνον ἢ ἔλεον Arist.Rh. 1354a25

    ; εἰς γέλωτα ib. 1415a37; τινὰ ἐπ' ἀρετήν, opp. προτρέψασθαι, X.Mem.1.4.1;

    πάντας ἐκ.. πολέμων ἐπὶ τὴν ὁμόνοιαν Isoc.5.141

    ;

    πρὸς.. κακίας ὑπερβολήν D. 20.36

    ;

    ἐμαυτὸν εἰς ἀπέχθειαν Id.23.1

    :—[voice] Med., ἐς γέλωτα προαγαγέσθαι τινά move one to laughter, Hdt.2.121.

    δ'; τὴν ὑγρότητα αὐτῶν τοῦ ἤθους εἰς ἔλεον Lycurg.33

    ;

    προαξόμεθ'.. εἰς ἀνάγκην D.5.14

    : c.inf.,

    τοῦτο πολεμίους προάγεται ἁμαρτάνειν X.Eq.Mag.5.15

    , cf. Aeschin.3.117, Arist.Pol. 1270b2:—freq. in [voice] Pass.,

    προαχθέντας εἰς φιλοποσίαν X. Mem.1.2.22

    ;

    εἰς τοῦτ' ὀργῆς προήχθησαν ὥστε.. Isoc.20.8

    : c. inf.,

    οὐ γὰρ ἔγωγε προαχθείην ἂν εἰπεῖν D.21.79

    , cf. 18.269, Arist.Ph. 194a31;

    προάγεται λαλεῖν Men.164

    ;

    πολλὰ προηγμένον πρᾶξαι D.5.23

    , etc.
    5 carry forward, advance, π. τὴν πόλιν lead it on to power, Th.6.18, D.19.18; π. αὐτὴν (sc. τὴν ἀρχὴν)

    ἐς τόδε Th.1.75

    , cf. Arist. Pol. 1274a10;

    λόγοισι προάγει.., ἔργοισι δ' οὐδὲ κινεῖ Cratin.300

    ; οὕτω μέχρι πόρρω προήγαγον [τὴν ἔχθραν] carried it so far, D.18.163;

    π. [τὰ πράγματα] ἐπὶ τὸ βέλτιον Id.Prooem.38

    , etc.; τὴν πραγματείαν π. εἰς τὸ πρόσθεν promote the study, Aristox.Fr.Hist.81; [ τὰ μαθήματα] Arist.Metaph. 985b24;

    τὰς τέχνας Id.SE 183b29

    , cf. Po. 1449a13; π. καὶ διαρθρῶσαι τὰ καλῶς ἔχοντα τῇ περιγραφῇ carry on and complete.., Id.EN 1098a22, cf. Pol. 1282b35:—[voice] Med.,

    ἐς τοῦτο [τὰ Περσέων πρήγματα] προηγάγοντο Hdt.7.50

    :—[voice] Pass., increase, become rife, D.19.266.
    b of persons, promote or prefer to honour,

    δᾶμος εἰς ἀριστοκρατίαν ἄνδρας αἰ προάγοι καλῶς Isyll.3

    , cf. Plb.12.13.6, etc.; τινὰς εἰς δόξαν, ἐφ' ἡγεμονίας, Plu.Them.7, Galb.20, etc.;

    ἐπὶ μέγα προαχθῆναι Luc.Alex.55

    .
    c prefer in the way of choice, esp. in [voice] Pass.,

    αἱ προηγμέναι φυλαί J.AJ4.8.44

    : προηγμένος distinguished, outstanding,

    ὥρα Philostr.

     Jun.Im.Praef.
    6 in Stoic Philos., of things neither good nor bad but promoted or advanced above the zero point of indifference,

    προηγμένον.. ὃ ἀδιάφορον <ὂν> ἐκλεγόμεθα Zeno Stoic.1.48

    , cf. Aristo ib.83, Chrysipp.ib.3.28, etc.; cf. ἀποπροάγω.
    7 in [tense] pf. [voice] Pass. with med. sense, οὕτω προῆκται τοὺς παῖδας ὥστε.. has had them brought up in such a way that.., D.54.23: also in pass. sense,

    ἐπιεικῶς τοῖς ἔθεσι προηγμένοι Arist. EN 1180a8

    .
    8 pronounce a discourse,

    κατὰ θεωρίαν π. πάντα Philostr.VS2.9.3

    ; αἱ κατὰ σχῆμα προηγμέναι τῶν ὑποθέσεων ib.2.4.2.
    II intr., lead the way, go before,

    πρόαγε δή Pl.Phdr. 227c

    ;

    σοῦ προάγοντος ἐγὼ ἐφεσπόμην Id.Phd. 90b

    , cf. X.An.6.5.6, etc.: with acc. added, προῆγε πολὺ πάντας dub. in J.BJ6.1.6 (leg. πάντων): of a commander, lead an advance, push forward, Plb.2.65.1,3.35.1, etc.
    2 metaph., ὁ προάγων λόγος the preceding discourse, Pl.Lg. 719a;

    αἱ π. γραφαί J.AJ19.6.2

    ;

    ὁ π. μήν PSI5.450.59

     (ii A.D.).
    4 excel, τινος Dsc.1.71 (v.l. προέχει)

    ; ἀρχαιότητι J.Ap.2.15

    .

    Greek-English dictionary (Αγγλικά Ελληνικά-λεξικό) > προάγω

  • 62 ὁ

    ὁ, [full] ἡ, τό, is, when thus written,
    A demonstr. Pronoun.
    B in [dialect] Att., definite or prepositive Article.
    C in [dialect] Ep., the so-called postpositive Article, = relative Pronoun, ὅς, ἥ, ὅ.—The nom. masc. and fem. sg. and pl., ὁ, ἡ, οἱ, αἱ, have no accent in codd. and most printed books, exc. when used as the relative ; but ὁ, ἡ, οἱ, αἱ differ only in writing from ὃ, ἣ, οἳ, αἳ ; the nom. forms of the article are said by Hdn.Gr.1.474 to be oxytone, and by A.D.Pron.8.7 not to be enclitic. The forms τῶν, τοῖς, ταῖς were barytone (i. e. τὼν, τοὶς, ταὶς ) in [dialect] Aeol. acc. to Aristarch. ap. A.D.Synt.51.26. For οἱ, αἱ some dialects (not Cypr., cf. Inscr.Cypr.135.30H., nor Cret., cf.Leg.Gort. 5.28, nor Lesbian, cf. Alc.81, Sapph.Supp.5.1 ) and Hom. have τοί, ταί (though οἱ, αἱ are also found in Hom.): other Homeric forms are gen. sg. τοῖο, gen. and dat. dual

    τοῖιν Od.18.34

    , al.: gen. pl. fem. τάων [pron. full] [ᾱ], dat. τοῖσι, τῇς and τῇσι, never ταῖσι or ταῖς in Hom.— In [dialect] Dor. and all other dialects exc. [dialect] Att. and [dialect] Ion. the fem. forms preserve the old [pron. full] ᾱ instead of changing it to η, hence [dialect] Dor. etc. ἁ, τάν, τᾶς ; the gen. pl. τάων contracts in many dialects to τᾶν ; the gen. sg. is in many places τῶ, acc. pl. τώς, but Cret., etc., τόνς (Leg.Gort.7.7, al.) or τός (ib.3.50, al.) ; in Lesbian [dialect] Aeol. the acc. pl. forms are τοὶς, ταὶς, IG12(2).645 A13, B62 ; dat. pl. τοῖς, ταῖς (or τοὶς, ταὶς, v. supr.), ib.645 A8, ib.1.6 ; ταῖσι as demonstr., Sapph. 16. The [dialect] Att. Poets also used the [dialect] Ion. and [dialect] Ep. forms τοῖσι, ταῖσι ; and in Trag. we find τοὶ μέν.., τοὶ δέ.., for οἱ μέν.., οἱ δέ.., not only in lyr., as A.Pers. 584, Th. 295, 298 ;

    οἱ μέν.. τοὶ δ' S.Aj. 1404

     (anap.) ; but even in a trimeter, A.Pers. 424. In [dialect] Att. the dual has usu. only one gender, τὼ θεώ (for τὰ θεά) And.1.113 sq. ; τὼ πόλεε Foed. ap. Th.5.23 ;

    τὼ ἡμέρα X.Cyr.1.2.11

     ;

    τὼ χεῖρε Id.Mem.2.3.18

     ;

    τοῖν χεροῖν Pl.Tht. 155e

     ;

    τοῖν γενεσέοιν Id.Phd. 71e

     ;

    τοῖν πολέοιν Isoc.4.75

     (τά S.Ant. 769, Ar.Eq. 424, 484,

    ταῖν Lys.19.17

    , Is.5.16, etc. have been corrected) ; in Arc. the form τοῖς functions as gen. dual fem.,

    μεσακόθεν τοῖς κράναιυν Schwyzer664.8

     (Orchom., iv B.C.):—in Elean and [dialect] Boeot. ὁ, ἡ (ἁ), τό, with the addition of -ί, = ὅδε, ἥδε, τόδε, nom.pl. masc. τυΐ the following men, Schwyzer485.14 (Thespiae, iii B.C.), al., cf. infr. VIII. 5. (With ὁ, ἁ, cf. Skt. demonstr. pron. sa, sā, Goth. sa, sō, ONorse sá, sú, Old Lat. acc. sum, sam (Enn.): —with τό [from Τόδ] cf. Skt. tat (tad), Lat. is-tud, Goth. pata: —with τοί cf. Skt. te, Lith. tĩe, OE. pá, etc.:—with τάων cf. Skt. tāsām, Lat. is-tarum:— the origin of the relative ὅς, ἥ, ὅ (q. v.) is different.)
    A ὁ, ἡ, τό, DEMONSTR. PRONOUN, that, the oldest and in Hom. the commonest sense: freq. also in Hdt. (1.86,5.35,al.), and sts. in Trag. (mostly in lyr., A.Supp. 1047, etc.; in trimeters, Id.Th. 197, Ag.7, Eu. 174 ; τῶν γάρ.., τῆς γάρ.., Id.Supp. 358, S.OT 1082 ; seldom in [dialect] Att. Prose, exc. in special phrases, v. infr. VI, VII):
    I joined with a Subst., to call attention to it, ὁ Τυδεΐδης he—Tydeus' famous son, Il. 11.660; τὸν Χρύσην that venerable man Chryses, I.II: and so with Appellat., Νέστωρ ὁ γέρων N.— thataged man, 7.324 ; αἰετοῦ.. τοῦ θηρητῆρος the eagle, that which is called hunter, 21.252, al. ; also to define and give emphasis, τιμῆς τῆς Πριάμου for honour, namely that of Priam, 20.181 ; οἴχετ' ἀνὴρ ὤριστος a man is gone, and he the best, 11.288, cf. 13.433, al.: sts. with words between the Pron. and Noun,

    αὐτὰρ ὁ αὖτε Πέλοψ 2.105

     ;

    τὸν Ἕκτορι μῦθον ἐνίσπες 11.186

    , cf. 703, al.:—different from this are cases like Il.1.409 αἴ κέν πως ἐθέλῃσιν ἐπὶ Τρώεσσιν ἀρῆξαι, τοὺς δὲ κατὰ πρύμνας τε καὶ ἀμφ' ἅλα ἔλσαι Ἀχαιούς if he would help the Trojans, but drive those back to the ships— I mean the Achaeans, where Ἀχ. is only added to explain τούς, cf. 1.472, 4.20, 329, al.
    II freq. without a Subst., he, she, it,

    ὁ γὰρ ἦλθε Il.1.12

    , al.
    III placed after its Noun, before the Relat. Prons., ἐφάμην σὲ περὶ φρένας ἔμμεναι ἄλλων, τῶν ὅσσοι Λυκίην ναιετάουσι far above the rest, above those to wit who, etc., Il.17.172 ; οἷ' οὔ πώ τιν' ἀκούομεν οὐδὲ παλαιῶν, τάων αἳ πάρος ἦσαν.. Ἀχαιαί such as we have not heard tell of yet even among the women of old, those women to wit who.., Od.2.119, cf. Il.5.332 ;

    θάλαμον τὸν ἀφίκετο, τόν ποτε τέκτων ξέσσεν Od.21.43

    , cf. 1.116, 10.74 :—for the [dialect] Att. usage v. infr.
    IV before a Possessive Pron. its demonstr. force is sts. very manifest, φθίσει σε τὸ σὸν μένος that spirit of thine, Il.6.407, cf. 11.608 ; but in 15.58, 16.40, and elsewh. it is merely the Art.
    V for cases in which the Homeric usage approaches most nearly to the Attic, v. infr. B. init.
    VI ὁ μέν.., ὁ δέ.. without a Subst., in all cases, genders, and numbers, Hom., etc.: sts. in Opposition, where ὁ μέν prop. refers to the former, ὁ δέ to the latter ; more rarely ὁ μέν the latter,

    ὁ δέ

     the former,

    Pl.Prt. 359e

    , Isoc.2.32,34: sts. in Partition, the one.., the other.., etc.—The Noun with it is regularly in gen. pl., being divided by the ὁ μέν.., ὁ δέ.., into parts,

    ἠΐθεοι καὶ παρθένοι.., τῶν δ' αἱ μὲν λεπτὰς ὀθόνας ἔχον, οἱ δὲ χιτῶνας εἵατο Il.18.595

     ;

    τῶν πόλεων αἱ μὲν τυραννοῦνται, αἱ δὲ δημοκρατοῦνται, αἱ δὲ ἀριστοκρατοῦνται Pl.R. 338d

    , etc.: but freq. the Noun is in the same case, by a kind of apposition,

    ἴδον υἷε Δάρητος, τὸν μὲν ἀλευάμενον τὸν δὲ κτάμενον Il.5.28

    , cf. Od.12.73, etc.: so in Trag. and [dialect] Att., S.Ant. 22, etc. ;

    πηγὴ ἡ μὲν εἰς αὐτὸν ἔδυ, ἡ δὲ ἔξω ἀπορρεῖ Pl.Phdr. 255c

     ; if the Noun be collective, it is in the gen. sg.,

    ὁ μὲν πεπραμένος ἦν τοῦ σίτου, ὁ δὲ ἔνδον ἀποκείμενος D.42.6

     : sts. a Noun is added in apposition with ὁ μέν or

    ὁ δέ, ὁ μὲν οὔτασ' Ἀτύμνιον ὀξέϊ δουρὶ Ἀντίλοχος.., Μάρις δὲ.. Il.16.317

    -19, cf. 116 ;

    τοὺς μὲν τὰ δίκαια ποιεῖν ἠνάγκασα, τοὺς πλουσίους, τοὺς δὲ πένητας κτλ. D.18.102

    , cf. Pl.Grg. 501a, etc.
    2 when a neg. accompanies ὁ δέ, it follows δέ, e.g.

    τὰς γοῦν Ἀθήνας οἶδα τὸν δὲ χῶρον οὔ S.OC24

     ;

    τὸν φιλόσοφον σοφίας ἐπιθυμητὴν εἶναι, οὐ τῆς μὲν τῆς δ' οὔ, ἀλλὰ πάσης Pl.R. 475b

     ;

    οὐ πάσας χρὴ τὰς δόξας τιμᾶν, ἀλλὰ τὰς μὲν τὰς δ' οὔ· οὐδὲ πάντων, ἀλλὰ τῶν μὲν τῶν δ' οὔ Id.Cri. 47a

    , etc.
    3 ὁ μέν τις.., ὁ δέ τις.. is used in Prose, when the Noun to which ὁ refers is left indefinite,

    ἔλεγον ὁ μέν τις τὴν σοφίαν, ὁ δὲ τὴν καρτερίαν.., ὁ δέ τις καὶ τὸ κάλλος X.Cyr.3.1.41

     ;

    νόμους.. τοὺς μὲν ὀρθῶς τιθέασιν τοὺς δέ τινας οὐκ ὀρθῶς Pl.R. 339c

    , cf. Phlb. 13c.
    4 on τὸ μέν.., τὸ δέ.., or τὰ μέν.., τὰ δέ.., v. infr. VIII.4.
    5 ὁ μέν is freq. used without a corresponding

    ὁ δέ, οἱ μὲν ἄρ' ἐσκίδναντο.., Μυρμιδόνας δ' οὐκ εἴα ἀποσκίδνασθαι Il.23.3

    , cf. 24.722, Th.8.12, etc.: also folld. by

    ἀλλά, ἡ μὲν γάρ μ' ἐκέλευε.., ἀλλ' ἐγὼ οὐκ ἔθελον Od.7.304

     ; by ἄλλος δέ, Il.6.147, etc. ;

    τὸν μὲν.., ἕτερον δέ Ar.Av. 843

    , etc. ;

    ὁ μέν.., ὃς δέ.. Thgn.205

     (v.l. οὐδέ): less freq. ὁ δέ in the latter clause without ὁ μέν preceding, τῇ ῥα παραδραμέτην φεύγων, ὁ δ' ὄπισθε διώκων (for ὁ μὲν φεύγων) Il.22.157 ;

    σφραγῖδε.. χρυσοῦν ἔχουσα τὸν δακτύλιον, ἡ δ' ἑτέρα ἀργυροῦν IG22.1388.45

    , cf.

    μέν D.

     III ;

    γεωργὸς μὲν εἷς, ὁ δὲ οἰκοδόμος, ἄλλος δέ τις ὑφαντής Pl.R. 369d

    , cf. Tht. 181d.
    6 ὁ δέ following μέν sts. refers to the subject of the preceding clause,

    τοῦ μὲν ἅμαρθ', ὁ δὲ Λεῦκον.. βεβλήκει Il. 4.491

     ;

    τὴν μὲν γενομένην αὐτοῖσι αἰτίην οὐ μάλα ἐξέφαινε, ὁ δὲ ἔλεγέ σφι Hdt.6.3

    , cf. 1.66,6.9, 133,7.6 : rare in [dialect] Att. Prose,

    ἐπεψήφιζεν αὐτὸς ἔφορος ὤν· ὁ δὲ οὐκ ἔφη διαγιγνώσκειν τὴν βοήν Th.1.87

     ;

    ἔμενον ὡς κατέχοντες τὸ ἄκρον· οἱ δ' οὐ κατεῖχον X.An.4.2.6

     : this is different from ὁ δέ in apodosi, v. infr. 7 ; also from passages in which both clauses have a common verb, v. ὅ γε 11.
    7 ὁ δέ is freq. used simply in continuing a narrative, Il.1.43, etc.; also used by Hom. in apodosi after a relat., v. ὅδε 111.3.
    VII the following usages prevailed in [dialect] Att. Prose,
    1 in dialogue, after καί, it was usual to say in nom. sg. masc. καὶ ὅς ; in the other cases the usual forms of the Art. were used (v.

    ὅς A.

     II.I and cf. Skt. sas, alternat. form of sa) ; so, in acc.,

    καὶ τὸν εἰπεῖν Pl.Smp. 174a

    , cf. X.Cyr.1.3.9, etc.; also in Hdt.,

    καὶ τὴν φράσαι 6.61

    , al.
    2 ὁ καὶ ὁ such and such,

    τῇ καὶ τῇ ἀτιμίᾳ Pl.Lg. 721b

     : but mostly in acc.,

    καί μοι κάλει τὸν καὶ τόν Lys.1.23

    , cf. Pl.Lg. 784d ;

    τὰ καὶ τὰ πεπονθώς D.21.141

    , cf. 9.68 ;

    τὸ καὶ τό Id.18.243

     ; ἀνάγκη ἄρα τὸ καὶ τό it must then be so and so, Arist.Rh. 1401a4, cf. 1413a22 ; but τὰ καὶ τά now one thing, now another, of good and bad,

    τὸν δ' ἀγαθὸν τολμᾶν χρὴ τά τε καὶ τὰ φέρειν Thgn.398

    , cf. Pi.P.5.55,7.20, al.;

    τῶν τε καὶ τῶν καιρόν Id.O. 2.53

     ; so πάντα τοῦ μετρίου μεταβαλλόμενα ἐπὶ τὰ καὶ ἐπὶ τά, of excess and defect, Hp.Acut.46 ; cf. A. VI.8.
    VIII abs. usages of single cases,
    1 fem. dat. τῇ, of Place, there, on that spot, here, this way, that way, Il.5.752, 858, al.: folld. by ᾗ, 13.52, etc.: also in Prose,

    τὸ μὲν τῇ, τὸ δὲ τῇ X.Ath.2.12

    .
    b with a notion of motion towards, that way, in that direction, Il.10.531,11.149, 12.124 ;

    τῇ ἴμεν ᾗ.. 15.46

     ;

    δελφῖνες τῇ καὶ τῇ ἐθύνεον ἰχθυάοντες Hes.Sc. 210

     :—only poet.
    c of Manner,

    τῇ περ τελευτήσεσθαι ἔμελλεν

     in this way, thus,

    Od.8.510

    .
    d repeated, τῇ μέν.., τῇ δέ.., in one way.., in another.., or partly.., partly.., E.Or. 356, Pl.Smp. 211a, etc.: without

    μέν, τῇ μᾶλλον, τῇ δ' ἧσσον Parm.8.48

    .
    e relat., where, by which way, only [dialect] Ep., as Il.12.118, Od.4.229.
    2 neut. dat. τῷ, therefore, on this account, freq. in Hom., Il.1.418, 2.254, al. (v. infr.): also in Trag., A.Pr. 239, S.OT 510 (lyr.) ; in Prose,

    τῷ τοι.. Pl.Tht. 179d

    , Sph. 230b.
    b thus, so, Il.2.373, 13.57, etc.: it may also, esp. when εἰ precedes, be translated, then, if this be so, on this condition, Od.1.239,3.224, 258,al., Theoc.29.11.—In Hom. the true form is prob. τῶ, as in cod. A, or τώ, cf. A.D.Adv.199.2.
    3 neut. acc. τό, wherefore, Il.3.176, Od.8.332, al., S.Ph. 142(lyr.) ; also τὸ δέ abs., but the fact is.., Pl.Ap. 23a, Men. 97c, Phd. 109d, Tht. 157b, R. 340d, Lg. 967a ; even when the τό refers to what precedes, the contrast may lie not in the thing referred to, but in another part of the sentence (cf. supr. VI. 6),

    τὸ δ' ἐπὶ κακουργίᾳ.. ἐπετήδευσαν Th.1.37

     ;

    τὸ δὲ.. ἡμῖν μᾶλλον περιέσται Id.2.89

     ; φασὶ δέ τινες αὐτὸν καὶ τῶν ἑπτὰ σοφῶν γεγονέναι· τὸ δὲ οὐκ ἦν but he was not, Nic.Dam.58J.
    4 τὸ μέν.., τὸ δέ.., partly.., partly.., or on the one hand.., on the other.., Th.7.36, etc., cf.Od.2.46 ; more freq. τὰ μέν.., τὰ δέ.., Hdt.1.173, S.Tr. 534, etc.; also

    τὰ μέν τι.., τὰ δέ τι.. X.An.4.1.14

     ;

    τὸ μέν τι.., τὸ δέ τι.. Luc.Macr.14

     ;

    τὰ μέν.., τὸ δὲ πλέον.. Th.1.90

     : sts. without τὸ μέν.. in the first clause,

    τὸ δέ τι Id.1.107

    ,7.48 : rarely of Time, τὰ μὲν πολλὰ.., τέλος δέ several times.. and finally, Hdt.3.85.
    5 of Time, sts. that time, sts. this (present) time, συνμαχία κ' ἔα ἑκατὸν ϝέτεα, ἄρχοι δέ κα τοΐ (where it is possible, but not necessary, to supply ϝέτος) SIG9.3 (Olympia, vi B.C.): so with Preps., ἐκ τοῦ, [dialect] Ep. τοῖο, from that time, Il.1.493,15.601.
    b πρὸ τοῦ, sts. written προτοῦ, before this, aforetime, Hdt.1.103, 122,5.55, A.Ag. 1204, Ar.Nu.5, etc.;

    ἐν τῷ πρὸ τοῦ χρόνῳ Th.1.32

    , cf. A.Eu. 462 ;

    τὸ πρὸ τοῦ D.S.20.59

    .
    6 ἐν τοῖς is freq. used in Prose with Superlatives, ἐν τοῖσι θειότατον a most marvellous thing, Hdt.7.137 ; ἐν τοῖς πρῶτοι the very first, Th.1.6, etc.; ἐν τοῖσι πρῶτος ( πρώτοις codd.) Pherecr.145.4 ; [Ζεὺς] Ἔρωτά τε καὶ Ἀνάγκην ἐν τοῖς πρῶτα ἐγέννησεν first of all, Aristid. Or.43(1).16, cf. 37(2).2: when used with fem. Nouns, ἐν τοῖς remained without change of gender, ἐν τοῖς πλεῖσται δὴ νῆες the greatest number of ships, Th.3.17; ἐν τοῖς πρώτη ἐγένετο (sc. ἡ στάσις) ib.82 : also with Advbs.,

    ἐν τοῖς μάλιστα Id.8.90

    , Pl.Cri. 52a, Plu.2.74e, 421d, 723e, Brut.6, 11,al., Paus.1.16.3, etc.;

    ἐν τοῖς χαλεπώτατα Th.7.71

     ;

    τὴν Αἴγυπτον ἐν τοῖς μάλιστα μελάγγειον οὖσαν Plu.2.364c

     : in late Prose, also with Positives,

    ἐν τοῖς παράδοξον Aristid.Or.48(24).47

     codd.; with

    πάνυ, ἐν τοῖς πάνυ D.H.1.19

    , cf. 66 ( ἐν ταῖς πάνυ f.l. 4.14,15).
    B ὁ, ἡ, τό, THE DEFINITE ARTICLE, the, to specify individuals: rare in this signf. in the earliest Gr., becoming commoner later. In Hom. the demonstr. force can generally be traced, v. supr. A. I, but the definite Art. must be recognized in places like Il.1.167,7.412, 9.309, 12.289, Od.19.372 : also when joined to an Adj. to make it a Subst.,

    αἰὲν ἀποκτείνων τὸν ὀπίστατον

     the hindmost man,

    Il.11.178

     ;

    τὸν ἄριστον 17.80

     ;

    τὸν δύστηνον 22.59

     ;

    τὸν προὔχοντα 23.325

     ; τῷ πρώτῳ.., τῷ δευτέρῳ.., etc., ib. 265sq. ; also in

    τῶν ἄλλων 2.674

    , al.: with Advs.,

    τὸ πρίν 24.543

    , al.;

    τὸ πάρος περ 17.720

     ;

    τὸ πρόσθεν 23.583

     ; also τὸ τρίτον ib. 733 ;

    τὰ πρῶτα 1.6

    ,al.; τὸ μὲν ἄλλο for the rest, 23.454 ;

    ἀνδρῶν τῶν τότε 9.559

    .—The true Art., however, is first fully established in fifth-cent. [dialect] Att., whilst the demonstr. usage disappears, exc. in a few cases, V. A. VI-VIII.—Chief usages, esp. in [dialect] Att.
    I not only with common Appellats., Adjs., and Parts., to specify them as present to sense or mind, but also freq. where we use the Possessive Pron.,

    τὸ κέαρ ηὐφράνθην Ar.Ach.5

     ; τὴν κεφαλὴν κατεάγην my head was broken, And.1.61, etc. ; τοὺς φίλους ποιούμεθα we make our friends, S.Ant. 190 ; τὰς πόλεις ἔκτιζον they began founding their cities, Th.1.12;

    οὐχ ὑπὲρ τὴν οὐσίαν ποιούμενοι τοὺς παῖδας Pl.R. 372b

    .
    b omitted with pr.nn.and freq. with Appellats. which require no specification, as θεός, βασιλεύς, v. θεός 1.1, βασιλεύς III ; ἐμ πόλει in the Acropolis, IG12.4.1, al.: but added to pr. nn., when attention is to be called to the previous mention of the person, as Th. (3.70 ) speaks first of Πειθίας and then refers to him repeatedly as ὁ Π.; cf. Θράσυλος in Id.8.104, with ὁ Θ. ib. 105 ; or when the person spoken of is to be specially distinguished, Ζεύς, ὅστις ὁ Ζεύς whoever this Zeus is, E.Fr. 480 ; and therefore properly omitted when a special designation follows, as Σωκράτης ὁ φιλόσοφος: seldom in Trag. with pr. nn., save to give pecul. emphasis, like Lat. ille, ὁ Λάϊος, ὁ Φοῖβος, S.OT 729, El.35, etc.: later, however, the usage became very common (the Homeric usage of ὁ with a pr. n. is different, v. A.I).
    c Aristotle says Σωκράτης meaning the historical Socrates, as in SE183b7, PA642a28, al., but ὁ Σωκράτης when he means the Platonic Socrates, as Pol.1261a6, al.: so with other pr.nn., EN1145a21, 1146a21, al.
    d for Σαῦλος ὁ καὶ Παῦλος, etc., v. καί B.2.
    2 in a generic sense, where the individual is treated as a type,

    οἷς ὁ γέρων μετέῃσιν.. λεύσσει Il.3.109

    ;

    πονηρὸν ὁ συκοφάντης D.18.242

    , etc.
    b freq. with abstract Nouns,

    ἥ τε ἐλπὶς καὶ ὁ ἔρως Th.3.45

    , etc.
    3 of outstanding members of a class, ὁ γεωγράφος, ὁ κωμικός, ὁ ποιητής, ὁ τεχνικός, v. γεωγράφος, κωμικός, ποιητής, τεχνικός.
    4 with infs., which thereby become Substs., τὸ εἴργειν prevention, Pl.Grg. 505b ; τὸ φρονεῖν good sense, S.Ant. 1348(anap.), etc.: when the subject is expressed it is put between the Art.and the inf., τὸ θεοὺς εἶναι the existence of gods, Pl.Phd. 62b ; τὸ μηδένα εἶναι ὄλβιον the fact or statement that no one is happy, Hdt.1.86.
    5 in neut. before any word or expression which itself is made the object of thought, τὸ ἄνθρωπος the word or notion man ; τὸ λέγω the word λέγω ; τὸ μηδὲν ἄγαν the sentiment 'ne quid nimis', E.Hipp. 265(lyr.); τὸ τῇ αὐτῇ the phrase τῇ αὐτῇ, Pl.Men. 72e : and so before whole clauses, ἡ δόξα.. περὶ τοῦ οὕστινας δεῖ ἄρχειν the opinion about the question 'who ought to rule', Id.R. 431e ; τὸ ἐὰν μένητε παρ' ἐμοί, ἀποδώσω the phrase 'I will give back, if.. ', X.Cyr. 5.1.21, cf. Pl.R. 327c, etc.;

    τοὺς τοῦ τί πρακτέον λογισμούς D.23.148

     ; τὸ ὀλίγοι the term few, Arist.Pol. 1283b11.
    6 before relat. clauses, when the Art. serves to combine the whole relat. clause into one notion, τῇ ᾗ φὴς σὺ σκληρότητι the harshness you speak of, Pl.Cra. 435a ; τὸν ἥμερον καρπόν.., καὶ τὸν ὅσος ξύλινος (i.e. καὶ τὸν καρπὸν ὅσος ἂν ᾖ ξύλινος) Id.Criti. 115b ;

    τῶν ὅσοι ἂν.. ἀγαθοὶ κριθῶσιν Id.R. 469b

     ;

    ἐκ γῆς καὶ πυρὸς μείξαντες καὶ τῶν ὅσα πυρὶ καὶ γῇ κεράννυται Id.Prt. 320d

    , cf. Hyp.Lyc.2 ;

    ταύτην τε τὴν αἰτίαν καὶ τὴν ὅθεν ἡ κίνησις Arist.Metaph. 987a8

     ;

    τὸν ὃς ἔφη Lys.23.8

     : hence the relat., by attraction, freq. follows the case of the Art., τοῖς οἵοις ἡμῖν τε καὶ ὑμῖν, i.e. τοῖς οὖσιν οἷοι ἡμεῖς καὶ ὑμεῖς, X.HG2.3.25, etc.
    7 before Prons.,
    a before the pers. Prons., giving them greater emphasis, but only in acc.,

    τὸν ἐμέ Pl.Tht. 166a

    ,Phlb. 20b ; τὸν.. σὲ καὶ ἐμέ ib. 59b ;

    τὸν αὑτόν Id.Phdr. 258a

     ; on ὁ αὐτός, v. αὐτός 111.
    b before the interrog. Pron. (both τίς and ποῖος), referring to something before, which needs to be more distinctly specified, A.Pr. 251, Ar. Pax 696 ; also τὰ τί; because οἷα went before, ib. 693. Of τίς only the neut. is thus used (v.supr.): ποῖος is thus used not only in neut. pl., τὰ ποῖα; E.Ph. 707 ; but also in the other genders, ὁ ποῖος; ib. 1704 ; τῆς ποίας μερίδος; D.18.64 ; τοῖς ποίοις.. ; Arist.Ph. 227b1.
    c with τοιοῦτος, τοιόσδε, τηλικοῦτος, etc., the Art. either makes the Pron. into a Subst.,

    ὁ τοιοῦτος

     that sort of person,

    X.Mem.4.2.21

    , etc.; or subjoins it to a Subst. which already has an Art.,

    τὴν ἀπολογίαν τὴν τοιαύτην D.41.13

    .
    8 before ἅπας, Pi.N.1.69, Hdt.3.64, 7.153 (s.v.l.), S.OC 1224 (lyr.), D.18.231, etc.; also τὸν ἕνα, τὸν ἕνα τοῦτον, Arist.Pol. 1287b8, 1288a19 : on its usage with ἕκαστος, v. sub voc.; and on οἱ ἄλλοι, οἱ πολλοί, etc., v. ἄλλος 11.6,

    πολύς 11.3

    , etc.
    9 the Art. with the [comp] Comp. is rare, if ἤ follows, S.Ant. 313, OC 796.
    II elliptic expressions:
    1 before the gen. of a pr.<*>., to express descent, son or daughter, Θουκυδίδης ὁ Ὀλόρου (sc. υἱός) Th.4.104 ; Ἑλένη ἡ τοῦ Διός (sc. θυγάτηρ) E.Hel. 470 : also to denote other relationships, e.g. brother, Lys.32.24, Alciphr.2.2.10 ; ἡ Σμικυθίωνος Μελιστίχη M. the wife of S., Ar.Ec.46 ; Κλέαρχος καὶ οἱ ἐκείνου Cl. and his men, X.An.1.2.15 ; ὁ τοῦ Ἀντιγένεος the slave of A., Hp.Hum.20.
    2 generally, before a gen. it indicates a wider relation, as τὸ τῶν νεῶν, τὸ τῶν Ἑρμῶν, the matter of the ships, the affair of the Hermae, Th.4.23,6.60 ; τὰ τοῦ Ἀρριβαίου πράσσειν to promote the interests of Arrhibaeus, Id.4.83, cf. 6.89, etc.; τὸ τῆς τύχης,=ἡ τύχη, Id.4.18 ; τὰ τῆς τύχης accidents, chance events, ib.55 ; τὰ γὰρ φθιτῶν τοῖς ὁρῶσι κόσμος performance of the rites due to the dead befits the living, E.Supp.78(lyr.); τὰ τῶν θεῶν that which is destined by the gods, S.Tr. 498(lyr.): hence with neut. of Possessive Pron., τὸ ἐμόν, τὸ σόν, what regards me or thee, my or thy business or interests, S.Aj. 124, El. 251, etc.: and with gen. of 3 pers.,

    τὸ τῆσδε E.Hipp.48

    . But τό τινος is freq. also, a man's word or saying, as

    τὸ τοῦ Σόλωνος Hdt.1.86

     ; τὸ τοῦ Ὁμήρου as Homer says, Pl.Tht. 183e ; also τά τινος so-and-so's house, Ar.V. 1432, D.54.7, Theoc.2.76, Herod.5.52, Ev.Luc.2.49.
    3 very freq. with cases governed by Preps.. αἱ ἐκ τῆς Ζακύνθου νῆες the ships from Zacynthus, Th.4.13 ; οἱ ἀμφί τινα, οἱ περί τινα, such an one and his followers, v. ἀμφί c.1.3, περί c.1.2 ; also τὰ ἐπὶ Θρᾴκης the Thrace-ward district, Th.1.59, al.; τὰ ἀπὸ τοῦ καταστρώματος matters on deck, Id.7.70 ; τὰ ἀπ' Ἀλκιβιάδου the proposals of Alcibiades, Id.8.48 ; τὰ ἀπὸ τῆς τύχης the incidents of fortune, Id.2.87, etc.
    4 on μὰ τόν, μὰ τήν, etc., v. μά IV.
    5 in elliptical phrases, ἐπορευόμην τὴν ἔξω τείχους (sc. ὁδόν) Pl.Ly. 203a ; ἡ ἐπὶ θανάτῳ (sc. στολή, δέσις), v. θάνατος; κατὰ τὴν ἐμήν (sc. γνώμην), v. ἐμός 11.4 ; ἡ αὔριον (sc. ἡμέρα), v. αὔριον; ἡ Λυδιστί (sc. ἁρμονία) Arist.Pol. 1342b32, etc.: freq. with Advs., which thus take an adj. sense, as ὁ, ἡ, τὸ νῦν;

    ὁ οἴκαδε πλοῦς Th.1.52

     ; οἱ τότε, οἱ ἔπειτα (sc. ἄνθρωποι), ib.9,10, etc. ; but τό stands abs. with Advs. of time and place, when one cannot (as in the preceding instances) supply a Subst., as

    κἀκεῖσε καὶ τὸ δεῦρο E.Ph. 266

    , cf.[315] (lyr.);

    ὁ μὲν τὸ κεῖθεν, ὁ δὲ τὸ κεῖθεν Id.Or. 1412

    (lyr.): rarely abs. in gen., ἰέναι τοῦ πρόσω to go forward, X.An.1.3.1 ;

    τοῦ προσωτάτω δραμεῖν S.Aj. 731

    .
    C as RELATIVE PRONOUN in many dialects ; both in nom. sg. masc. ὅ, as

    κλῦθί μοι, ὃ χθιζὸς θεὸς ἤλυθες Od.2.262

    , cf. 1.300, al. ;

    Ἔρως, ὃ κατ' ὀμμάτων στάζεις πόθον E.Hipp. 526

    (lyr.);

    Ἄδωνις, ὃ κἠν Ἀχέροντι φιλεῖται Theoc.15.86

     ; ὃ ἐξορύξη he who banishes him, Schwyzer679.12,25 ([place name] Cyprus) ; and in the forms beginning with τ, esp. in Hom. (Od.4.160, al.), Hdt.1.7, al.: also in [dialect] Ion. Poets,

    ἐν τῷ κάθημαι Archil.87.3

    , cf. Semon.7.3, Anacr.86 (prob.), Herod.2.64, al.: freq. in Trag.,

    τῆς S.OC 1258

    , Tr. 381, 728, E.Alc. 883 (anap.);

    τῷ S.Ph.14

     ;

    τήν Id.OC 747

    , Tr.47, El. 1144 ; τό Id.OT 1427 ; τῶν ib. 1379, Ant. 1086.—Never in Com. or [dialect] Att. Prose:—[dialect] Ep. gen. sg.

    τεῦ Il.18.192

    (s.v.l.).
    D CRASIS OF ARTICLE:
    a [dialect] Att. ὁ, ἡ, τό, with [pron. full] ᾰ make ᾱ, as ἁνήρ, ἁλήθεια, τἀγαθόν, τᾄτιον; so οἱ, αἱ, τά, as ἅνδρες, τἀγαθά; also τοῦ, τῷ, as τἀγαθοῦ, τἀγαθῷ: ὁ, τό, οἱ, before e gives ου, οὑξ, οὑπί, οὑμός, τοὔργον, οὑπιχώριοι, etc.; also τοῦ, as τοὐμοῦ, τοὐπιόντος; but ἅτερος, θάτερον ([pron. full] ¯ ?ὁX?ὁX), [dialect] Ion. οὕτερος, τοὔτερον (v. ἕτερος), [dialect] Att. fem. ἡτέρα, dat. θητέρᾳ (v. ἕτερος); τῷ loses the iota, τὠμῷ, τὠπιόντι: ὁ, τό, before ο gives ου, as Οὁδυσσεύς, Οὑλύμπιος, τοὔνομα: ὁ, τό, etc., before αυ gives ᾱυ, αὑτός, ταὐτό, ταὐτῷ (freq. written ἁτός, etc. in Inscrr. and Pap.); so τὰ αὐτά=ταὐτά, αἱ αὐταί= αὑταί: ἡ before εὐ gives ηὑ, as ηὑλάβεια: τῇ before ἡ gives θη, as θἠμέρᾳ: τὸ before ὑ gives θου, as θοὔδωρ for τὸ ὕδωρ.
    b other dialects: in their treatment of crasis these follow the local laws of contraction, hence, e.g., [dialect] Dor. ὡξ from

    ὁ ἐξ Theoc.1.65

    , ὥλαφος from ὁ ἔλαφος ib. 135 ; [dialect] Ion. ᾡσυμνήτης from ὁ αἰς- SIG57.45 (Milet., v B.C.) ; ὡυτή from

    ἡ αὐτή Heraclit.60

    , etc.

    Greek-English dictionary (Αγγλικά Ελληνικά-λεξικό) > ὁ

  • 63 σίνομαι

    Grammatical information: v.
    Meaning: `to rob, to pillage, to destroy, to damage' (ep. Od., Sapph., Ion., X., hell. a. late, also Argos, Crete, Herakleia; Hdt., Hp. also - έομαι; not in Att..
    Dialectal forms: rarely with ἐπι-, κατα-, προ-.
    Compounds: As 1. member in σιν-όδων, - όδους, - οντος m. name of a fish (Arist., Dorio a. o.), folketymol. for συν- σίνομαι (s. Strömberg 45). Unclear however σινάμωρος approx. `harmful, baneful, wicked, mischievous, sweet-toothed, lustful' with - ία, - έω, - ευμα (Ion., com., Arist. a. o.); because of the short ι not to the verb, but to the noun σίνος; the final fits badly with μωρός, perh. better to ἐγχεσί-μωρος, if taken as `spear-happy' (cf. Leumann Hom. Wörter 272 n. 18).
    Derivatives: 1. σίνος n. `damage, harm, disaster' (Ion., A., Arist. a. o.) with ἀ-σινής `unharmed, harmless' (λ 110, Sapph., Ion., A., Pl., X., hell. a. late), opposite ἐπι-σινής (Thphr. a. o.). 2. σίντης m. `destroyer, robber', mostly of beasts of prey, `thief' (Il., hell. a. late epic); σίντωρ m. `id.' (Crete IVa, AP; Fraenkel Nom. ag. 1, 123 a. 131); uncertain Σίντιες m. pl. name of the old population of Lemnos (Hom. a.o.), after Kretschmer Glotta 30, 117 prop. "the robbers" and to be distinguished from the Thracian Σιντοι. 3. Σίνις, - ιδος m. name of a mythical robber (B., E., X. a. o.), also appellat. `robber, destroyer' (A. Ag. 217 [gener. changed to ἶνις], Call., Lyc.). 4. σιναρός `damaged' (Hp., as ῥυπαρός a. o.). 5. σινότης f. `damage, flaw' (gloss.). 6. ἐπισίνιος ἐπίβουλος H. 7. σινόω ( προ- σίνομαι) = σίνομαι (Man., Vett. Val. a. o.) with σινωτικός `harmful' (late). 8. σίνδρων = πονηρός (Phot.), also `slave born of a slave' (Seleukos ap. Ath.), also as PN; cf. Masson on Hipponax 121 w. n. 3; gen. pl. σινδρῶν πονηρῶν, βλαπτικῶν H.
    Origin: XX [etym. unknown]
    Etymology: The present σίνομαι (second. - έομαι; cf. Schwyzer 721) wit generalized length of the ι (on the unclear σίνονται Sapph. 26, 4 s. Hamm Gramm. $217a) can be best understood as yotformation *σίν-ι̯ομαι (Schwyzer 694). If inherited, σίνομαι must like κλίνω, κρίνω contain a present-forming ν, which spread not only to the sporadic aoristforms but also to the nouns σίνος, σίντης a. o. -- Not certainly explained. PGr. *τϜι-ν- can on itself be connected with σής (if from *τϜη[ι̯]-ς) and with Germ. Þwi- in OE Þwīnan `become weak, disappear' a. o. (Wood Mod. Phil. 5, 268); apart from the semant. polyinterpretability of the relevant words, there are both for σής and for Þwīnan other explanations, s. on σής and WP. 1, 702 f. (Pok. 1054) w. lit. To be rejected explanations of σίνομαι in W.-Hofmann s. sine and sonium; older lit. in Bq and Lidén IF 19, 351 w. n. 2. -- Cf. σιφλός.
    Page in Frisk: 2,708-709

    Greek-English etymological dictionary (Ελληνικά-Αγγλικά ετυμολογική λεξικό) > σίνομαι

  • 64 Chevalier, Charles-Louis

    [br]
    b. 18 April 1804 France
    d. 21 November 1859 Paris, France
    [br]
    French instrument maker and optician.
    [br]
    The son of a distinguished Parisian instrument maker, Charles Chevalier supplied equipment to all the major photographic pioneers of the period. He sold a camera obscura to Niepce de St Victor as early as 1826 and was largely responsible for bringing Niepce de St Victor and Daguerre together. Chevalier was one of the first opticians to design lenses specifically for photographic use; the first photographic camera to be offered for sale to the public, the Giroux daguerreotype camera of 1839, was in fact fitted with a Chevalier achromatic lens. Chevalier also supplied lenses, equipment and examples of daguerreotypes to Talbot in England. In 1841 Chevalier was awarded first prize in a competition for the improvement of photographic lenses, sponsored by the Société d'Encouragement of Paris. Contemporary opinion, however, favoured the runner-up, the Petzval Portrait lens by Voigtländer of Vienna, and Chevalier subsequently became embroiled in an acrimonious dispute which did him little credit. It did not stop him designing lenses, and he went on to become an extremely successful supplier of quality daguerreotype equipment. He was a founder member of the Société Héliographique in 1851.
    [br]
    Further Reading
    Pavillon de Photographie du Parc Naturel Régional de Brotonne, 1974, Charles-Louis Chevalier (an authoritative account of Chevalier's life and work).
    H.Gernsheim and A.Gernsheim, 1969, The History of Photography, rev. edn, London.
    JW

    Biographical history of technology > Chevalier, Charles-Louis

  • 65 Clerk, Sir Dugald

    [br]
    b. 31 March 1854 Glasgow, Scotland
    d. 12 November 1932 Ewhurst, Surrey, England
    [br]
    Scottish mechanical engineer, inventor of the two-stroke internal combustion engine.
    [br]
    Clerk began his engineering training at about the age of 15 in the drawing office of H.O.Robinson \& Company, Glasgow, and in his father's works. Meanwhile, he studied at the West of Scotland Technical College and then, from 1871 to 1876, at Anderson's College, Glasgow, and at the Yorkshire College of Science, Leeds. Here he worked under and then became assistant to the distinguished chemist T.E.Thorpe, who set him to work on the fractional distillation of petroleum, which was to be useful to him in his later work. At that time he had intended to become a chemical engineer, but seeing a Lenoir gas engine at work, after his return to Glasgow, turned his main interest to gas and other internal combustion engines. He pursued his investigations first at Thomson, Sterne \& Company (1877–85) and then at Tangyes of Birmingham (1886–88. In 1888 he began a lifelong partnership in Marks and Clerk, consulting engineers and patent agents, in London.
    Beginning his work on gas engines in 1876, he achieved two patents in the two following years. In 1878 he made his principal invention, patented in 1881, of an engine working on the two-stroke cycle, in which the piston is powered during each revolution of the crankshaft, instead of alternate revolutions as in the Otto four-stroke cycle. In this engine, Clerk introduced supercharging, or increasing the pressure of the air intake. Many engines of the Clerk type were made but their popularity waned after the patent for the Otto engine expired in 1890. Interest was later revived, particularly for application to large gas engines, but Clerk's engine eventually came into its own where simple, low-power motors are needed, such as in motor cycles or motor mowers.
    Clerk's work on the theory and design of gas engines bore fruit in the book The Gas Engine (1886), republished with an extended text in 1909 as The Gas, Petrol and Oil Engine; these and a number of papers in scientific journals won him international renown. During and after the First World War, Clerk widened the scope of his interests and served, often as chairman, on many bodies in the field of science and industry.
    [br]
    Principal Honours and Distinctions
    Knighted 1917; FRS 1908; Royal Society Royal Medal 1924; Royal Society of Arts Alber Medal 1922.
    Further Reading
    Obituary Notices of Fellows of the Royal Society, no. 2, 1933.
    LRD

    Biographical history of technology > Clerk, Sir Dugald

  • 66 Herschel, John Frederick William

    [br]
    b. 7 March 1792 Slough, England
    d. 11 May 1871 Collingwood, England
    [br]
    English scientist who introduced "hypo" (thiosulphate) as a photographic fixative and discovered the blueprint process.
    [br]
    The only son of Sir William Herschel, the famous astronomer, John graduated from Cambridge in 1813 and went on to become a distinguished astronomer, mathematician and chemist. He left England in November 1833 to set up an observatory near Cape Town, South Africa, where he embarked on a study of the heavens in the southern hemisphere. He returned to England in the spring of 1838, and between 1850 and 1855 Herschel served as Master of the Royal Mint. He made several notable contributions to photography, perhaps the most important being his discovery in 1819 that hyposulphites (thiosulphates) would dissolve silver salts. He brought this property to the attention of W.H.F. Talbot, who in 1839 was using a common salt solution as a fixing agent for his early photographs. After trials, Talbot adopted "hypo", which was a far more effective fixative. It was soon adopted by other photographers and eventually became the standard photographic fixative, as it still is in the 1990s. After hearing of the first photographic process in January 1839, Herschel devised his own process within a week. In September 1839 he made the first photograph on glass. He is credited with introducing the words "positive", "negative" and "snapshot" to photography, and in 1842 he invented the cyanotype or "blueprint" process. This process was later to be widely adopted by engineers and architects for the reproduction of plans and technical drawings, a practice abandoned only in the late twentieth century.
    [br]
    Principal Honours and Distinctions
    Knight of the Royal Hanoverian Guelphic Order 1831. Baronet 1838. FRS 1813. Copley Medal 1821.
    Further Reading
    Dictionary of National Biography, 1968, Vol. IX, pp. 714–19.
    H.J.P.Arnold, 1977, William Henry Fox Talbot, London; Larry J.Schaaf, 1992, Out of the Shadows: Herschel, Talbot and the Invention of Photography, Newhaven and London (for details of his contributions to photography and his relationship with Talbot).
    JW

    Biographical history of technology > Herschel, John Frederick William

  • 67 Kilby, Jack St Clair

    [br]
    b. 8 November 1923 Jefferson City, Missouri, USA
    [br]
    American engineer who filed the first patents for micro-electronic (integrated) circuits.
    [br]
    Kilby spent most of his childhood in Great Bend, Kansas, where he often accompanied his father, an electrical power engineer, on his maintenance rounds. Working in the blizzard of 1937, his father borrowed a "ham" radio, and this fired Jack to study for his amateur licence (W9GTY) and to construct his own equipment while still a student at Great Bend High School. In 1941 he entered the University of Illinois, but four months later, after the attack on Pearl Harbor, he was enlisted in the US Army and found himself working in a radio repair workshop in India. When the war ended he returned to his studies, obtaining his BSEE from Illinois in 1947 and his MSEE from the University of Wisconsin. He then joined Centralab, a small electronics firm in Milwaukee owned by Globe-Union. There he filed twelve patents, including some for reduced titanate capacitors and for Steatite-packing of transistors, and developed a transistorized hearing-aid. During this period he also attended a course on transistors at Bell Laboratories. In May 1958, concerned to gain experience in the field of number processing, he joined Texas Instruments in Dallas. Shortly afterwards, while working alone during the factory vacation, he conceived the idea of making monolithic, or integrated, circuits by diffusing impurities into a silicon substrate to create P-N junctions. Within less than a month he had produced a complete oscillator on a chip to prove that the technology was feasible, and the following year at the 1ERE Show he demonstrated a germanium integrated-circuit flip-flop. Initially he was granted a patent for the idea, but eventually, after protracted litigation, priority was awarded to Robert Noyce of Fairchild. In 1965 he was commissioned by Patrick Haggerty, the Chief Executive of Texas Instruments, to make a pocket calculator based on integrated circuits, and on 14 April 1971 the world's first such device, the Pocketronic, was launched onto the market. Costing $150 (and weighing some 2½ lb or 1.1 kg), it was an instant success and in 1972 some 5 million calculators were sold worldwide. He left Texas Instruments in November 1970 to become an independent consultant and inventor, working on, amongst other things, methods of deriving electricity from sunlight.
    [br]
    Principal Honours and Distinctions
    Franklin Institute Stuart Ballantine Medal 1966. Institute of Electrical and Electronics Engineers David Sarnoff Award 1966; Cledo Brunetti Award (jointly with Noyce) 1978; Medal of Honour 1986. National Academy of Engineering 1967. National Science Medal 1969. National Inventors Hall of Fame 1982. Honorary DEng Miami 1982, Rochester 1986. Honorary DSc Wisconsin 1988. Distinguished Professor, Texas A \& M University.
    Bibliography
    6 February 1959, US patent no. 3,138,743 (the first integrated circuit (IC); initially granted June 1964).
    US patent no. 3,819,921 (the Pocketronic calculator).
    Further Reading
    T.R.Reid, 1984, Microchip. The Story of a Revolution and the Men Who Made It, London: Pan Books (for the background to the development of the integrated circuit). H.Queisser, 1988, Conquest of the Microchip, Cambridge, Mass.: Harvard University Press.
    KF

    Biographical history of technology > Kilby, Jack St Clair

  • 68 Kirkaldy, David

    [br]
    b. 4 April 1820 Mayfield, Dundee, Scotland
    d. 25 January 1897 London, England
    [br]
    Scottish engineer and pioneer in materials testing.
    [br]
    The son of a merchant of Dundee, Kirkaldy was educated there, then at Merchiston Castle School, Edinburgh, and at Edinburgh University. For a while he worked in his father's office, but with a preference for engineering, in 1843 he commenced an apprenticeship at the Glasgow works of Robert Napier. After four years in the shops he was transferred to the drawing office and in a very few years rose to become Chief. Here Kirkaldy demonstrated a remarkable talent both for the meticulous recording of observations and data and for technical drawing. His work also had an aesthetic appeal and four of his drawings of Napier steamships were shown at the Paris Exhibition of 1855, earning both Napier and Kirkaldy a medal. His "as fitted" set of drawings of the Cunard Liner Persia, which had been built in 1855, is now in the possession of the National Maritime Museum at Greenwich, London; it is regarded as one of the finest examples of its kind in the world, and has even been exhibited at the Royal Academy in London.
    With the impending order for the Royal Naval Ironclad Black Prince (sister ship to HMS Warrior, now preserved at Portsmouth) and for some high-pressure marine boilers and engines, there was need for a close scientific analysis of the physical properties of iron and steel. Kirkaldy, now designated Chief Draughtsman and Calculator, was placed in charge of this work, which included comparisons of puddled steel and wrought iron, using a simple lever-arm testing machine. The tests lasted some three years and resulted in Kirkaldy's most important publication, Experiments on Wrought Iron and Steel (1862, London), which gained him wide recognition for his careful and thorough work. Napier's did not encourage him to continue testing; but realizing the growing importance of materials testing, Kirkaldy resigned from the shipyard in 1861. For the next two and a half years Kirkaldy worked on the design of a massive testing machine that was manufactured in Leeds and installed in premises in London, at The Grove, Southwark.
    The works was open for trade in January 1866 and engineers soon began to bring him specimens for testing on the great machine: Joseph Cubitt (son of William Cubitt) brought him samples of the materials for the new Blackfriars Bridge, which was then under construction. Soon The Grove became too cramped and Kirkaldy moved to 99 Southwark Street, reopening in January 1874. In the years that followed, Kirkaldy gained a worldwide reputation for rigorous and meticulous testing and recording of results, coupled with the highest integrity. He numbered the most distinguished engineers of the time among his clients.
    After Kirkaldy's death, his son William George, whom he had taken into partnership, carried on the business. When the son died in 1914, his widow took charge until her death in 1938, when the grandson David became proprietor. He sold out to Treharne \& Davies, chemical consultants, in 1965, but the works finally closed in 1974. The future of the premises and the testing machine at first seemed threatened, but that has now been secured and the machine is once more in working order. Over almost one hundred years of trading in South London, the company was involved in many famous enquiries, including the analysis of the iron from the ill-fated Tay Bridge (see Bouch, Sir Thomas).
    [br]
    Principal Honours and Distinctions
    Institution of Engineers and Shipbuilders in Scotland Gold Medal 1864.
    Bibliography
    1862, Results of an Experimental Inquiry into the Tensile Strength and Other Properties of Wrought Iron and Steel (originally presented as a paper to the 1860–1 session of the Scottish Shipbuilders' Association).
    Further Reading
    D.P.Smith, 1981, "David Kirkaldy (1820–97) and engineering materials testing", Transactions of the Newcomen Society 52:49–65 (a clear and well-documented account).
    LRD / FMW

    Biographical history of technology > Kirkaldy, David

  • 69 Messel, Rudolf

    SUBJECT AREA: Chemical technology
    [br]
    b. 14 January 1848 Darmstadt, Germany
    d. 18 April 1920 London, England
    [br]
    German industrial chemist.
    [br]
    Messel served three years as an apprentice to the chemical manufacturers E.Lucius of Frankfurt before studying chemistry at Zürich, Heidelberg and Tübingen. In 1870 he travelled to England to assist the distinguished chemist Sir Henry Roscoe, but was soon recalled to Germany on the outbreak of the Franco-Prussian War. After hostilities ceased, Messel returned to London to join the firm of manufacturers of sulphuric acid Dunn, Squire \& Company of Stratford, London. The firm amalgamated with Spencer Chapman, and after Messel became its Managing Director in 1878 it was known as Spencer, Chapman \& Messel Ltd.
    Messel's principal contribution to chemical technology was the invention of the contact process for the manufacture of sulphuric acid. Earlier processes for making this essential product, now needed in ever-increasing quantities by the new processes for making dyestuffs, fertilizers and explosives, were based on the oxidation of sulphur dioxide by oxides of nitrogen, developed by Joshua Ward and John Roebuck. Attempts to oxidize the dioxide to the trioxide with the oxygen in the air in the presence of a suitable catalyst had so far failed because the catalyst had become "poisoned" and ineffective; Messel avoided this by using highly purified gases. The contact process produced a concentrated form of sulphuric acid called oleum. Until the outbreak of the First World War, Messel's firm was the principal manufacturer, but then the demand rose sharply, so that other firms had to engage in its manufacture. Production thereby increased from 20,000 to 450,000 tons per year.
    [br]
    Principal Honours and Distinctions
    FRS 1912. President, Society of Chemical Industry 1911–12, 1914.
    Further Reading
    1931, Special jubilee issue, Journal of the Society of the Chemical Industry (July). G.T.Morgan and D.D.Pratt, 1938, The British Chemical Industry, London.
    LRD

    Biographical history of technology > Messel, Rudolf

  • 70 Priestman, William Dent

    [br]
    b. 23 August 1847 Sutton, Hull, England
    d. 7 September 1936 Hull, England
    [br]
    English oil engine pioneer.
    [br]
    William was the second son and one of eleven children of Samuel Priestman, who had moved to Hull after retiring as a corn miller in Kirkstall, Leeds, and who in retirement had become a director of the North Eastern Railway Company. The family were strict Quakers, so William was sent to the Quaker School in Bootham, York. He left school at the age of 17 to start an engineering apprenticeship at the Humber Iron Works, but this company failed so the apprenticeship was continued with the North Eastern Railway, Gateshead. In 1869 he joined the hydraulics department of Sir William Armstrong \& Company, Newcastle upon Tyne, but after a year there his father financed him in business at a small, run down works, the Holderness Foundry, Hull. He was soon joined by his brother, Samuel, their main business being the manufacture of dredging equipment (grabs), cranes and winches. In the late 1870s William became interested in internal combustion engines. He took a sublicence to manufacture petrol engines to the patents of Eugène Etève of Paris from the British licensees, Moll and Dando. These engines operated in a similar manner to the non-compression gas engines of Lenoir. Failure to make the two-stroke version of this engine work satisfactorily forced him to pay royalties to Crossley Bros, the British licensees of the Otto four-stroke patents.
    Fear of the dangers of petrol as a fuel, reflected by the associated very high insurance premiums, led William to experiment with the use of lamp oil as an engine fuel. His first of many patents was for a vaporizer. This was in 1885, well before Ackroyd Stuart. What distinguished the Priestman engine was the provision of an air pump which pressurized the fuel tank, outlets at the top and bottom of which led to a fuel atomizer injecting continuously into a vaporizing chamber heated by the exhaust gases. A spring-loaded inlet valve connected the chamber to the atmosphere, with the inlet valve proper between the chamber and the working cylinder being camoperated. A plug valve in the fuel line and a butterfly valve at the inlet to the chamber were operated, via a linkage, by the speed governor; this is believed to be the first use of this method of control. It was found that vaporization was only partly achieved, the higher fractions of the fuel condensing on the cylinder walls. A virtue was made of this as it provided vital lubrication. A starting system had to be provided, this comprising a lamp for preheating the vaporizing chamber and a hand pump for pressurizing the fuel tank.
    Engines of 2–10 hp (1.5–7.5 kW) were exhibited to the press in 1886; of these, a vertical engine was installed in a tram car and one of the horizontals in a motor dray. In 1888, engines were shown publicly at the Royal Agricultural Show, while in 1890 two-cylinder vertical marine engines were introduced in sizes from 2 to 10 hp (1.5–7.5 kW), and later double-acting ones up to some 60 hp (45 kW). First, clutch and gearbox reversing was used, but reversing propellers were fitted later (Priestman patent of 1892). In the same year a factory was established in Philadelphia, USA, where engines in the range 5–20 hp (3.7–15 kW) were made. Construction was radically different from that of the previous ones, the bosses of the twin flywheels acting as crank discs with the main bearings on the outside.
    On independent test in 1892, a Priestman engine achieved a full-load brake thermal efficiency of some 14 per cent, a very creditable figure for a compression ratio limited to under 3:1 by detonation problems. However, efficiency at low loads fell off seriously owing to the throttle governing, and the engines were heavy, complex and expensive compared with the competition.
    Decline in sales of dredging equipment and bad debts forced the firm into insolvency in 1895 and receivers took over. A new company was formed, the brothers being excluded. However, they were able to attend board meetings, but to exert no influence. Engine activities ceased in about 1904 after over 1,000 engines had been made. It is probable that the Quaker ethics of the brothers were out of place in a business that was becoming increasingly cut-throat. William spent the rest of his long life serving others.
    [br]
    Further Reading
    C.Lyle Cummins, 1976, Internal Fire, Carnot Press.
    C.Lyle Cummins and J.D.Priestman, 1985, "William Dent Priestman, oil engine pioneer and inventor: his engine patents 1885–1901", Proceedings of the Institution of
    Mechanical Engineers 199:133.
    Anthony Harcombe, 1977, "Priestman's oil engine", Stationary Engine Magazine 42 (August).
    JB

    Biographical history of technology > Priestman, William Dent

  • 71 Rankine, William John Macquorn

    [br]
    b. 5 July 1820 Edinburgh, Scotland
    d. 1872
    [br]
    [br]
    Rankine was educated at Ayr Academy and Glasgow High School, although he appears to have learned much of his basic mathematics and physics through private study. He attended Edinburgh University and then assisted his father, who was acting as Superintendent of the Edinburgh and Dalkeith Railway. This introduction to engineering practice was followed in 1838 by his appointment as a pupil to Sir John MacNeill, and for the next four years he served under MacNeill on his Irish railway projects. While still in his early twenties, Rankine presented pioneering papers on metal fatigue and other subjects to the Institution of Civil Engineers, for which he won a prize, but he appears to have resigned from the Civils in 1857 after an argument because the Institution would not transfer his Associate Membership into full Membership. From 1844 to 1848 Rankine worked on various projects for the Caledonian Railway Company, but his interests were becoming increasingly theoretical and a series of distinguished papers for learned societies established his reputation as a leading scholar in the new science of thermodynamics. He was elected Fellow of the Royal Society in 1853. At the same time, he remained intimately involved with practical questions of applied science, in shipbuilding, marine engineering and electric telegraphy, becoming associated with the influential coterie of fellow Scots such as the Thomson brothers, Napier, Elder, and Lewis Gordon. Gordon was then the head of a large and successful engineering practice, but he was also Regius Professor of Engineering at the University of Glasgow, and when he retired from the Chair to pursue his business interests, Rankine, who had become his Assistant, was appointed in his place.
    From 1855 until his premature death in 1872, Rankine built up an impressive engineering department, providing a firm theoretical basis with a series of text books that he wrote himself and most of which remained in print for many decades. Despite his quarrel with the Institution of Civil Engineers, Rankine took a keen interest in the institutional development of the engineering profession, becoming the first President of the Institution of Engineers and Shipbuilders in Scotland, which he helped to establish in 1857. Rankine campaigned vigorously for the recognition of engineering studies as a full university degree at Glasgow, and he achieved this in 1872, the year of his death. Rankine was one of the handful of mid-nineteenth century engineers who virtually created engineering as an academic discipline.
    [br]
    Principal Honours and Distinctions
    FRS 1853. First President, Institution of Engineers and Shipbuilders in Scotland, 1857.
    Bibliography
    1858, Manual of Applied Mechanics.
    1859, Manual of the Steam Engine and Other Prime Movers.
    1862, Manual of Civil Engineering.
    1869, Manual of Machinery and Millwork.
    Further Reading
    J.Small, 1957, "The institution's first president", Proceedings of the Institution of Engineers and Shipbuilders in Scotland: 687–97.
    H.B.Sutherland, 1972, Rankine. His Life and Times.
    AB

    Biographical history of technology > Rankine, William John Macquorn

  • 72 Steinheil, Carl August von

    [br]
    b. 1801 Roppoltsweiler, Alsace
    d. 1870 Munich, Germany
    [br]
    German physicist, founder of electromagnetic telegraphy in Austria, and photographic innovator and lens designer.
    [br]
    Steinheil studied under Gauss at Göttingen and Bessel at Königsberg before jointing his parents at Munich. There he concentrated on optics before being appointed Professor of Physics and Mathematics at the University of Munich in 1832. Immediately after the announcement of the first practicable photographic processes in 1839, he began experiments on photography in association with another professor at the University, Franz von Kobell. Steinheil is reputed to have made the first daguerreotypes in Germany; he certainly constructed several cameras of original design and suggested minor improvements to the daguerreotype process. In 1849 he was employed by the Austrian Government as Head of the Department of Telegraphy in the Ministry of Commerce. Electromagnetic telegraphy was an area in which Steinheil had worked for several years previously, and he was now appointed to supervise the installation of a working telegraphic system for the Austrian monarchy. He is considered to be the founder of electromagnetic telegraphy in Austria and went on to perform a similar role in Switzerland.
    Steinheil's son, Hugo Adolph, was educated in Munich and Augsburg but moved to Austria to be with his parents in 1850. Adolph completed his studies in Vienna and was appointed to the Telegraph Department, headed by his father, in 1851. Adolph returned to Munich in 1852, however, to concentrate on the study of optics. In 1855 the father and son established the optical workshop which was later to become the distinguished lens-manufacturing company C.A. Steinheil Söhne. At first the business confined itself almost entirely to astronomical optics, but in 1865 the two men took out a joint patent for a wide-angle photographic lens claimed to be free of distortion. The lens, called the "periscopic", was not in fact free from flare and not achromatic, although it enjoyed some reputation at the time. Much more important was the achromatic development of this lens that was introduced in 1866 and called the "Aplanet"; almost simultaneously a similar lens, the "Rapid Rentilinear", was introduced by Dallmeyer in England, and for many years lenses of this type were fitted as the standard objective on most photographic cameras. During 1866 the elder Steinheil relinquished his interest in lens manufacturing, and control of the business passed to Adolph, with administrative and financial affairs being looked after by another son, Edward. After Carl Steinheil's death Adolph continued to design and market a series of high-quality photographic lenses until his own death.
    [br]
    Further Reading
    J.M.Eder, 1945, History of Photography, trans. E.Epstean, New York (a general account of the Steinheils's work).
    Most accounts of photographic lens history will give details of the Steinheils's more important work. See, for example, Chapman Jones, 1904, Science and Practice of Photography, 4th edn, London: and Rudolf Kingslake, 1989, A History of the Photographic Lens, Boston.
    JW

    Biographical history of technology > Steinheil, Carl August von

  • 73 White, Sir William Henry

    SUBJECT AREA: Ports and shipping
    [br]
    b. 2 February 1845 Devonport, England
    d. 27 February 1913 London, England
    [br]
    English naval architect distinguished as the foremost nineteenth-century Director of Naval Construction, and latterly as a consultant and author.
    [br]
    Following early education at Devonport, White passed the Royal Dockyard entry examination in 1859 to commence a seven-year shipwright apprenticeship. However, he was destined for greater achievements and in 1863 passed the Admiralty Scholarship examinations, which enabled him to study at the Royal School of Naval Architecture at South Kensington, London. He graduated in 1867 with high honours and was posted to the Admiralty Constructive Department. Promotion came swiftly, with appointment to Assistant Constructor in 1875 and Chief Constructor in 1881.
    In 1883 he left the Admiralty and joined the Tyneside shipyard of Sir W.G. Armstrong, Mitchell \& Co. at a salary of about treble that of a Chief Constructor, with, in addition, a production bonus based on tonnage produced! At the Elswick Shipyard he became responsible for the organization and direction of shipbuilding activities, and during his relatively short period there enhanced the name of the shipyard in the warship export market. It is assumed that White did not settle easily in the North East of England, and in 1885, following negotiations with the Admiralty, he was released from his five-year exclusive contract and returned to public service as Director of Naval Construction and Assistant Controller of the Royal Navy. (As part of the settlement the Admiralty released Philip Watts to replace White, and in later years Watts was also to move from that same shipyard and become White's successor as Director of Naval Construction.) For seventeen momentous years White had technical control of ship production for the Royal Navy. The rapid building of warships commenced after the passing of the Naval Defence Act of 1889, which authorized directly and indirectly the construction of around seventy vessels. The total number of ships built during the White era amounted to 43 battleships, 128 cruisers of varying size and type, and 74 smaller vessels. While White did not have the stimulation of building a revolutionary capital ship as did his successor, he did have the satisfaction of ensuring that the Royal Navy was equipped with a fleet of all-round capability, and he saw the size, displacement and speed of the ships increase dramatically.
    In 1902 he resigned from the Navy because of ill health and assumed several less onerous tasks. During the construction of the Cunard Liner Mauretania on the Tyne, he held directorships with the shipbuilders Swan, Hunter and Wigham Richardson, and also the Parsons Marine Turbine Company. He acted as a consultant to many organizations and had an office in Westminster. It was there that he died in February 1913.
    White left a great literary legacy in the form of his esteemed Manual of Naval Architecture, first published in 1877 and reprinted several times since in English, German and other languages. This volume is important not only as a text dealing with first principles but also as an illustration of the problems facing warship designers of the late nineteenth century.
    [br]
    Principal Honours and Distinctions
    KCB 1895. Knight Commander of the Order of the Danneborg (Denmark). FRS. FRSE. President, Institution of Civil Engineers; Mechanical Engineers; Marine Engineers. Vice- President, Institution of Naval Architects.
    Bibliography
    Further Reading
    D.K.Brown, 1983, A Century of Naval Construction, London.
    FMW

    Biographical history of technology > White, Sir William Henry

  • 74 Zeiss, Carl

    [br]
    b. 11 September 1816 Weimar, Thuringia, Germany
    d. 3 December 1888 Jena, Saxony, Germany
    [br]
    German lens manufacturer who introduced scientific method to the production of compound microscopes and made possible the production of the first anastigmatic photographic objectives.
    [br]
    After completing his early education in Weimar, Zeiss became an apprentice to the engineer Dr Frederick Koerner. As part of his training, Zeiss was required to travel widely and he visited Vienna, Berlin, Stuttgart and Darmstadt to study his trade. In 1846 he set up a business of his own, an optical workshop in Jena, where he began manufacturing magnifying glasses and microscopes. Much of his work was naturally for the university there and he had the co-operation of some of the University staff in the development of precision instruments. By 1858 he was seeking to make more expensive compound microscopes, but he found the current techniques primitive and laborious. He decided that it was necessary to introduce scientific method to the design of the optics, and in 1866 he sought the advice of a professor of physics at the University of Jena, Ernst Abbe (1840–1905). It took Zeiss until 1869 to persuade Abbe to join his company, and two difficult years were spent working on the calculations before success was achieved. Within a few more years the Zeiss microscope had earned a worldwide reputation for quality. Abbe became a full partner in the Zeiss business in 1875. In 1880 Abbe began an association with Friedrich Otte Schott that was to lead to the establishment of the famous Jena glass works in 1884. With the support of the German government, Jena was to become the centre of world production of new optical glasses for photographic objectives.
    In 1886 the distinguished mathematician and optician Paul Rudolph joined Zeiss at Jena. After Zeiss's death, Rudolph went on to use the characteristics of the new glass to calculate the first anastigmatic lenses. Immediately successful and widely imitated, the anastigmats were also the first of a long series of Zeiss photographic objectives that were to be at the forefront of lens design for years to come. Abbe took over the management of the company and developed it into an internationally famous organization.
    [br]
    Further Reading
    L.W.Sipley, 1965, Photography's Great Inventors, Philadelphia (a brief biography). J.M.Eder, 1945, History of Photography, trans. E.Epstean, New York.
    K.J.Hume, 1980, A History of Engineering Metrology, London, 122–32 (includes a short account of Carl Zeiss and his company).
    JW / RTS

    Biographical history of technology > Zeiss, Carl

  • 75 Mind

       It becomes, therefore, no inconsiderable part of science... to know the different operations of the mind, to separate them from each other, to class them under their proper heads, and to correct all that seeming disorder in which they lie involved when made the object of reflection and inquiry.... It cannot be doubted that the mind is endowed with several powers and faculties, that these powers are distinct from one another, and that what is really distinct to the immediate perception may be distinguished by reflection and, consequently, that there is a truth and falsehood which lie not beyond the compass of human understanding. (Hume, 1955, p. 22)
       Let us then suppose the mind to be, as we say, white Paper, void of all Characters, without any Ideas: How comes it to be furnished? Whence comes it by that vast store, which the busy and boundless Fancy of Man has painted on it, with an almost endless variety? Whence has it all the materials of Reason and Knowledge? To this I answer, in one word, from Experience. (Locke, quoted in Herrnstein & Boring, 1965, p. 584)
       The kind of logic in mythical thought is as rigorous as that of modern science, and... the difference lies, not in the quality of the intellectual process, but in the nature of things to which it is applied.... Man has always been thinking equally well; the improvement lies, not in an alleged progress of man's mind, but in the discovery of new areas to which it may apply its unchanged and unchanging powers. (Leґvi-Strauss, 1963, p. 230)
       MIND. A mysterious form of matter secreted by the brain. Its chief activity consists in the endeavor to ascertain its own nature, the futility of the attempt being due to the fact that it has nothing but itself to know itself with. (Bierce, quoted in Minsky, 1986, p. 55)
       [Philosophy] understands the foundations of knowledge and it finds these foundations in a study of man-as-knower, of the "mental processes" or the "activity of representation" which make knowledge possible. To know is to represent accurately what is outside the mind, so to understand the possibility and nature of knowledge is to understand the way in which the mind is able to construct such representation.... We owe the notion of a "theory of knowledge" based on an understanding of "mental processes" to the seventeenth century, and especially to Locke. We owe the notion of "the mind" as a separate entity in which "processes" occur to the same period, and especially to Descartes. We owe the notion of philosophy as a tribunal of pure reason, upholding or denying the claims of the rest of culture, to the eighteenth century and especially to Kant, but this Kantian notion presupposed general assent to Lockean notions of mental processes and Cartesian notions of mental substance. (Rorty, 1979, pp. 3-4)
       Under pressure from the computer, the question of mind in relation to machine is becoming a central cultural preoccupation. It is becoming for us what sex was to Victorians-threat, obsession, taboo, and fascination. (Turkle, 1984, p. 313)
       7) Understanding the Mind Remains as Resistant to Neurological as to Cognitive Analyses
       Recent years have been exciting for researchers in the brain and cognitive sciences. Both fields have flourished, each spurred on by methodological and conceptual developments, and although understanding the mechanisms of mind is an objective shared by many workers in these areas, their theories and approaches to the problem are vastly different....
       Early experimental psychologists, such as Wundt and James, were as interested in and knowledgeable about the anatomy and physiology of the nervous system as about the young science of the mind. However, the experimental study of mental processes was short-lived, being eclipsed by the rise of behaviorism early in this century. It was not until the late 1950s that the signs of a new mentalism first appeared in scattered writings of linguists, philosophers, computer enthusiasts, and psychologists.
       In this new incarnation, the science of mind had a specific mission: to challenge and replace behaviorism. In the meantime, brain science had in many ways become allied with a behaviorist approach.... While behaviorism sought to reduce the mind to statements about bodily action, brain science seeks to explain the mind in terms of physiochemical events occurring in the nervous system. These approaches contrast with contemporary cognitive science, which tries to understand the mind as it is, without any reduction, a view sometimes described as functionalism.
       The cognitive revolution is now in place. Cognition is the subject of contemporary psychology. This was achieved with little or no talk of neurons, action potentials, and neurotransmitters. Similarly, neuroscience has risen to an esteemed position among the biological sciences without much talk of cognitive processes. Do the fields need each other?... [Y]es because the problem of understanding the mind, unlike the wouldbe problem solvers, respects no disciplinary boundaries. It remains as resistant to neurological as to cognitive analyses. (LeDoux & Hirst, 1986, pp. 1-2)
       Since the Second World War scientists from different disciplines have turned to the study of the human mind. Computer scientists have tried to emulate its capacity for visual perception. Linguists have struggled with the puzzle of how children acquire language. Ethologists have sought the innate roots of social behaviour. Neurophysiologists have begun to relate the function of nerve cells to complex perceptual and motor processes. Neurologists and neuropsychologists have used the pattern of competence and incompetence of their brain-damaged patients to elucidate the normal workings of the brain. Anthropologists have examined the conceptual structure of cultural practices to advance hypotheses about the basic principles of the mind. These days one meets engineers who work on speech perception, biologists who investigate the mental representation of spatial relations, and physicists who want to understand consciousness. And, of course, psychologists continue to study perception, memory, thought and action.
    ... [W]orkers in many disciplines have converged on a number of central problems and explanatory ideas. They have realized that no single approach is likely to unravel the workings of the mind: it will not give up its secrets to psychology alone; nor is any other isolated discipline-artificial intelligence, linguistics, anthropology, neurophysiology, philosophy-going to have any greater success. (Johnson-Laird, 1988, p. 7)

    Historical dictionary of quotations in cognitive science > Mind

  • 76 ilim

    ,-lmi 1. branch of knowledge or study, science: fizik ilmi the science of physics. ilahiyat ilmi the science of theology. tabii ilimler the natural sciences. 2. scientific study of knowledge, study based on a scientific method: Bu neticeye ilim yoluyla vardım. I reached this conclusion by scientific study. 3. theoretical knowledge, knowledge based on theory alone. - adamı person whose profession is the scientific pursuit of knowledge in a particular field (usually refers to distinguished scholars or researchers). -ini almak /ın/ to become good at (a job), master the art of: Piyanoları akort etmenin ilmini almışsın. It looks like you´ve mastered the art of piano tuning.

    Saja Türkçe - İngilizce Sözlük > ilim

  • 77 עטר

    עָטַר(b. h.; cmp. הטר) (to cut off, surround, to wreathe, adorn.Part. pass. עָטוּר. Pesik. R. s. 9, beg. כוס … שיהא מורח ושיהא ע׳וכ׳ the goblet of benediction must be cleansed (shining), wreathed and full; Y.Ber.VII, end. 11d מלא ע׳ ומודח (not עיטור), v. infra. Pi. עִיטֵּר 1) same. Ber.51a ר׳ י׳ מְעַטְּרֵהוּ בתלמידים R. J. wreathed it (the goblet of benediction) by placing scholars around it (v. supra). Bicc. III, 9 מְעַטְּרִין אתוכ׳ the first fruits must be decorated with plants not belonging to the seven kinds of fruits. Y. ib. 65c היה מְעַטְּדָן תאנים decorated them with figs. Y.Taan.IV, 68b bot. Bets.5a כדי לעַטֵּר שיקיוכ׳ in order to have the markets of Jerusalem decorated with fruits; a. fr.Part. pass. מְעוּטָּר; f. מְעוּטֶּרֶת; pl. מְעוּטָּרִים, מְעוּטָּרִין; מְעוּטָרוֹת. Ab. Zar.I, 4 (12b) חניות מע׳ wreathed shops (in honor of the deity of the bazaar). Y. ib. I, 39d במה מע׳ wherewith are they wreathed (in order to be recognized as dedicated to a deity)?; a. e. 2) to crown, offer a crown. Tanḥ. Vaëra 5 והיו … ומְעַטְּרִין אותו and all the chiefs came and crowned him (Pharaoh); Ex. R. s. 5 מַעֲטִירִין (Hif.). Ib. משעִטְּרוּ אותו after they had crowned him. Ib. s. 42 מדינה … לעַטֵּר למלך a country that sent a delegate to offer the king a crown (of fealty); a. fr. Hithpa. הִתְעַטֵּר, Nithpa. נִתְעַטֵּר 1) to be surrounded, protected, saved. Tanḥ. Toldoth 4 (ref. to Prov. 17:6) הצדיקים מִתְעַטְּרִין בבני בניהם ובניהם מתעטרין באבותם the righteous are saved for the sake of their grandchildren, and their children for the sake of their fathers; אברהם נתע בזכותוכ׳ Abraham was saved (from the furnace) for the sake of Jacob Ib. יצחק נתע׳וכ׳ Isaac was protected through Abraham, and Abraham through Isaac. Gen. R. s. 47, beg. (ref. to Prov. 12:4, as applied to Sarah) בעלה נתע׳ בה והיא לא נִתְעַטְּרָה בבעלה her husband was protected through her, but she was not protected through him; a. e. 2) to be crowned, adorned, distinguished. Y.Snh.II, 20b top (ref. to 1 Chr. 11:24; 26) הוא ירחמאל קדמוי … גויה להִתְעַטֵּר בה it is the Jerahmeel mentioned before, only that he married a gentile woman (named עטרה) to be ennobled through her; Ruth R. end. Y.Dem.II, 22c bot. אותה עטרה … להתעטר בה the Lord has left, to him this crown to be crowned with it (this distinction to become renowned by it), v. גָּדַר; a. e.

    Jewish literature > עטר

  • 78 עָטַר

    עָטַר(b. h.; cmp. הטר) (to cut off, surround, to wreathe, adorn.Part. pass. עָטוּר. Pesik. R. s. 9, beg. כוס … שיהא מורח ושיהא ע׳וכ׳ the goblet of benediction must be cleansed (shining), wreathed and full; Y.Ber.VII, end. 11d מלא ע׳ ומודח (not עיטור), v. infra. Pi. עִיטֵּר 1) same. Ber.51a ר׳ י׳ מְעַטְּרֵהוּ בתלמידים R. J. wreathed it (the goblet of benediction) by placing scholars around it (v. supra). Bicc. III, 9 מְעַטְּרִין אתוכ׳ the first fruits must be decorated with plants not belonging to the seven kinds of fruits. Y. ib. 65c היה מְעַטְּדָן תאנים decorated them with figs. Y.Taan.IV, 68b bot. Bets.5a כדי לעַטֵּר שיקיוכ׳ in order to have the markets of Jerusalem decorated with fruits; a. fr.Part. pass. מְעוּטָּר; f. מְעוּטֶּרֶת; pl. מְעוּטָּרִים, מְעוּטָּרִין; מְעוּטָרוֹת. Ab. Zar.I, 4 (12b) חניות מע׳ wreathed shops (in honor of the deity of the bazaar). Y. ib. I, 39d במה מע׳ wherewith are they wreathed (in order to be recognized as dedicated to a deity)?; a. e. 2) to crown, offer a crown. Tanḥ. Vaëra 5 והיו … ומְעַטְּרִין אותו and all the chiefs came and crowned him (Pharaoh); Ex. R. s. 5 מַעֲטִירִין (Hif.). Ib. משעִטְּרוּ אותו after they had crowned him. Ib. s. 42 מדינה … לעַטֵּר למלך a country that sent a delegate to offer the king a crown (of fealty); a. fr. Hithpa. הִתְעַטֵּר, Nithpa. נִתְעַטֵּר 1) to be surrounded, protected, saved. Tanḥ. Toldoth 4 (ref. to Prov. 17:6) הצדיקים מִתְעַטְּרִין בבני בניהם ובניהם מתעטרין באבותם the righteous are saved for the sake of their grandchildren, and their children for the sake of their fathers; אברהם נתע בזכותוכ׳ Abraham was saved (from the furnace) for the sake of Jacob Ib. יצחק נתע׳וכ׳ Isaac was protected through Abraham, and Abraham through Isaac. Gen. R. s. 47, beg. (ref. to Prov. 12:4, as applied to Sarah) בעלה נתע׳ בה והיא לא נִתְעַטְּרָה בבעלה her husband was protected through her, but she was not protected through him; a. e. 2) to be crowned, adorned, distinguished. Y.Snh.II, 20b top (ref. to 1 Chr. 11:24; 26) הוא ירחמאל קדמוי … גויה להִתְעַטֵּר בה it is the Jerahmeel mentioned before, only that he married a gentile woman (named עטרה) to be ennobled through her; Ruth R. end. Y.Dem.II, 22c bot. אותה עטרה … להתעטר בה the Lord has left, to him this crown to be crowned with it (this distinction to become renowned by it), v. גָּדַר; a. e.

    Jewish literature > עָטַר

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