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61 light
light [laɪt]lumière ⇒ 1 (a), 1 (b) lampe ⇒ 1 (b) lueur ⇒ 1 (c) feu ⇒ 1 (d), 1 (e), 1 (g) phare ⇒ 1 (d), 1 (j) jour ⇒ 1 (f) fenêtre ⇒ 1 (h) solution ⇒ 1 (i) clair ⇒ 2 (a), 2 (b) atone ⇒ 2 (c) léger ⇒ 2 (d)-(f), 3 éclairer ⇒ 4 (a) allumer ⇒ 4 (b) s'allumer ⇒ 5 (a)1 noun(a) (luminosity, brightness) lumière f;∎ there's not enough light to read by il n'y a pas assez de lumière pour lire;∎ it looks brown in this light on dirait que c'est marron avec cette lumière;∎ by the light of our flashlamps à la lumière de nos lampes de poche;∎ by the light of the moon au clair ou à la clarté de la lune;∎ the light was beginning to fail le jour commençait à baisser;∎ she took the picture against the light elle a pris la photo à contre-jour;∎ literary at first light au point ou au lever du jour;∎ you're (standing) in my light tu me fais de l'ombre;∎ in the cold light of the morning dans la lueur pâle du matin;∎ figurative to bring sth to light révéler qch;∎ to be brought or to come to light être découvert ou révélé;∎ the trial will throw or cast light on their real motives le procès permettra d'en savoir plus sur ou de percer à jour leurs véritables mobiles;∎ can you throw any light on this problem? peux-tu apporter tes lumières sur ce problème?, peux-tu éclaircir cette question?;∎ the light at the end of the tunnel le bout du tunnel;∎ at last we can see (some or the) light at the end of the tunnel enfin on voit le bout du tunnel;∎ to see the light of day voir le jour∎ the lights of the city les lumières de la ville;∎ a light went on in the window une lumière s'est allumée à la fenêtre;∎ turn the light on/off allume/éteins (la lumière);∎ put the lights out before you go to bed éteins les lumières avant de te coucher;∎ during the storm the lights went out il y a eu une panne d'électricité ou de lumière pendant l'orage;∎ we were dazzled by the lights of the oncoming cars les phares des véhicules qui venaient en face nous éblouissaient;∎ dip your lights roulez en code(e) (traffic light) feu m (rouge);∎ turn left at the lights tournez à gauche au feu rouge;∎ she jumped the lights elle a brûlé le feu rouge;∎ the lights were (on) amber le feu était à l'orange(f) (aspect, viewpoint) jour m;∎ I see the problem in a different light je vois le problème sous un autre jour;∎ in a good/bad/new light sous un jour favorable/défavorable/nouveau;∎ literary to act according to one's lights agir selon ses principes∎ could you give me a light? pouvez-vous me donner du feu?;∎ have you got a light? vous avez du feu?;∎ to set light to sth mettre le feu à qch(h) (window) fenêtre f; (small round) lucarne f; (of mullioned window) jour m; (of greenhouse) carreau m(i) (in crossword) solution f(j) (lighthouse) phare m(a) (bright, well-lit) clair;∎ a large, light room une grande pièce claire;∎ it isn't light enough to read il n'y a pas assez de lumière pour lire;∎ it's getting light already il commence déjà à faire jour;∎ it stays light until 10 il fait jour jusqu'à 10 heures du soir∎ she has light hair elle a des cheveux clairs;∎ light yellow/brown jaune/marron clair (inv)(d) (in weight) léger;∎ as light as a feather léger comme une plume;∎ light clothes vêtements mpl légers;∎ to be light on one's feet être leste;∎ light touch (of painter, author, film director) finesse f;∎ she's got a very light touch with pastry les pâtisseries qu'elle fait sont très légères(e) (comedy, music etc) léger, facile;∎ light conversation conversation f peu sérieuse, propos mpl anodins(f) (not intense, strong etc) léger;∎ there was a light tap at the door on frappa tout doucement à la porte;∎ the traffic was light la circulation était fluide;∎ I had a light lunch j'ai mangé légèrement à midi, j'ai déjeuné léger;∎ a light rain was falling il tombait une pluie fine;∎ take some light reading prends quelque chose de facile à lire;∎ I'm a light sleeper j'ai le sommeil léger;∎ a light wine un vin léger;∎ he can only do light work il ne peut faire que des travaux peu fatigants;∎ to make light of sth prendre qch à la légère3 adverb∎ to travel light voyager léger(a) (illuminate) éclairer;∎ the room was lit by a single bare bulb la pièce n'était éclairée que par une ampoule nue;∎ I'll light the way for you je vais t'éclairer le chemin∎ to light a fire allumer un feu, faire du feu∎ to light from a horse descendre d'un cheval(lungs) mou m∎ in (the) light of these new facts à la lumière de ces faits nouveaux►► light air (on Beaufort scale) très légère brise f;light aircraft avion m de tourisme;British light ale = bière brune légère;Military light artillery artillerie f légère ou de petit calibre;light beam faisceau m lumineux;light box table f lumineuse;light bulb ampoule f (électrique);Metallurgy light castings petites pièces fpl de fonderie;American light cream crème f liquide;Television light cue signal m lumineux;light entertainment variétés fpl;∎ familiar it's not exactly light entertainment (job) ce n'est pas ce qu'on fait de plus divertissant; (music, play, film) ce n'est pas ce qu'il y a de plus léger;light fitting applique f (électrique);light flare fusée f éclairante;light industry industrie f légère;light infantry infanterie f légère;light meter posemètre m;light opera opéra m comique, opérette f;Computing light pen crayon m optique;light pollution excès m de lumière artificielle;light ray rayon m lumineux;light show spectacle m de lumière;∎ a laser light show un spectacle laser;light soil terre f légère;light switch interrupteur m;light table (for viewing negatives, film) table f lumineuse;Marketing light user faible utilisateur(trice) m,f;light vehicle véhicule m léger;light wave onde f lumineuse;light weapons armes fpl légères∎ to light into sb (attack) rentrer dans le lard à qntomber (par hasard) sur, trouver par hasard➲ light upéclairer;∎ the house was all lit up la maison était tout ou toute éclairée;∎ joy lit up her face son visage rayonnait de bonheur∎ the whole sky lit up le ciel entier s'illumina(b) (face, eyes) s'éclairer, s'illuminer➲ light upon = light on -
62 Niepce, Joseph Nicéphore
SUBJECT AREA: Photography, film and optics[br]b. 1765 Franced. 5 July 1833 Chalon, France[br]French inventor who was the first to produce permanent photographic images with the aid of a camera.[br]Coming from a prosperous family, Niepce was educated in a Catholic seminary and destined for the priesthood. The French Revolution intervened and Niepce became an officer in an infantry regiment. An attack of typhoid fever in Italy ended his military career, and he returned to France and was married. Returning to his paternal home in Chalon in 1801, he joined with his brother Claude to construct an ingenious engine called the pyréolophore, which they patented in 1807. The French Government also encouraged the brothers in their attempts to produce large quantities of indigo-blue dye from wood, a venture that was ultimately unsuccessful.Nicéphore began to experiment with lithography, which led him to take an interest in the properties of light-sensitive materials. He pursued this interest after Claude moved to Paris in 1816 and is reported to have made negative images in a camera obscura using paper soaked in silver chloride. Niepce went on to experiment with bitumen of judea, a substance that hardened on exposure to light. In 1822, using bitumen of judea on glass, he produced a heliograph from an engraving. The first images from nature may have been made as early as 1824, but the world's earliest surviving photographic image was made in 1826. A view of the courtyard of Niepce's home in Chalon was captured on a pewter plate coated with bitumen of judea; an exposure of several hours was required, the softer parts of the bitumen being dissolved away by a solvent to reveal the image.In 1827 he took examples of his work to London where he met Francis Bauer, Secretary of the Royal Society. Nothing came of this meeting, but on returning to France Niepce continued his work and in 1829 entered into a formal partnership with L.J.M. Daguerre with a view to developing their mutual interest in capturing images formed by the camera obscura. However, the partnership made only limited progress and was terminated by Niepce's death in 1833. It was another six years before the announcement of the first practicable photographic processes was made.[br]Bibliography1973. Joseph Nicéphore Niepce lettres 1816–7, Pavillon de Photographie du Parc Naturel, Régional de Brotonne.1974, Joseph Nicéphore Niepce correspondences 1825–1829, Pavillon de Photographie du Parc Naturel, Régional de Brotonne.Further ReadingJ.M.Eder, 1945, History of Photography, trans. E. Epstean, New York (provides a full account of Niepce's life and work).H.Gernsheim and A.Gernsheim, 1969, The History of Photography, rev. edn, London (provides a full account of Niepce's life and work).JWBiographical history of technology > Niepce, Joseph Nicéphore
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