Philosophical Magazine

SUBJECT AREA: Electronics and information technology, Telecommunications

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At the age of 8 Lodge entered Newport Grammar School, and in 1863–5 received private education at Coombs in Suffolk. He then returned to Staffordshire, where he assisted his father in the potteries by working as a book-keeper. Whilst staying with an aunt in London in 1866–7, he attended scientific lectures and became interested in physics. As a result of this and of reading copies of English Mechanic magazine, when he was back home in Hanley he began to do experiments and attended the Wedgewood Institute. Returning to London c. 1870, he studied initially at the Royal College of Science and then, from 1874, at University College, London (UCL), at the same time attending lectures at the Royal Institution.

In 1875 he obtained his BSc, read a paper to the British Association on "Nodes and loops in chemical formulae" and became a physics demonstrator at UCL. The following year he was appointed a physics lecturer at Bedford College, completing his DSc in 1877. Three years later he became Assistant Professor of Mathematics at UCL, but in 1881, after only two years, he accepted the Chair of Experimental Physics at the new University College of Liverpool. There began a period of fruitful studies of electricity and radio transmission and reception, including development of the lightning conductor, discovery of the "coherent" effect of sparks and improvement of Branly's coherer, and, in 1894, what is said to be the first public demonstration of the transmission and reception (using a coherer) of wireless telegraphy, from Lewis's department store to the clock tower of Liverpool University's Victoria Building. On 10 May 1897 he filed a patent for selective tuning by self-in-ductance; this was before Marconi's first patent was actually published and its priority was subsequently upheld.

In 1900 he became the first Principal of the new University of Birmingham, where he remained until his retirement in 1919. In his later years he was increasingly interested in psychical research.

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See also: Hertz, Heinrich Rudolph

1 pull-out supplement.

2 reprint, offprint, separate, pull-out.

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► nombre femenino

1 offprint

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SF offprint

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femenino offprint

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= offprint [off-print], separate, separately bound part, reprint.

Ex. The first approach was based on the CLRU collection of off-prints of articles on automatic language processing.

Ex. Continuous revision means that Phoenixes and major revisions will be released as separates between editions.

Ex. We are pleased to announce the launch of 'Philosophical Magazine Letters' as a separately bound part of 'Philosophical Magazine'.

Ex. This book includes information about submitting the manuscript of a scientific article for publication, the review process and reprints.

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femenino offprint

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offprint

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separata nf

pull-out supplement

SUBJECT AREA: Metallurgy

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He was the son of John Johnson, then sole Commercial Assayer in London, from whom he inherited his aptitude for chemistry and metallurgy. At the age of 14 he was apprenticed to his father by the Worshipful Company of Goldsmiths. Ore samples then being analysed in Johnson's office introduced him to the new metal platinum, and resulted in a paper to Philosophical Magazine in 1812. Johnson established himself as a "practical mineralogist" in Maiden Lane, London, in 1818 and in Hatton Garden after 1822. He was greatly assisted by a fellow metallurgist, Thomas Cock (1787–1842), who developed the platinum fabrication and pigment sides of die business. In 1827 Johnson was consulted by the Russian government about the exploitation of the rich platinum deposits that had been discovered in the Urals in 1819. Between 1829 and 1832 Johnson became the first in England to manufacture nickel, extracted from nickel-bearing material imported from Germany at his plant at Bow Common on the Regent's Canal. In 1832 he began to réfine gold imported from the Imperial Brazilian Association by a process which separated without loss the metals silver, platinum, palladium, rhodium and iridium. This profitable activity continued until the Brazilian company was wound up in 1852. Since 1824, Johnson had been named "assay master" by a number of mining companies. From 1843 until the mid-1850s he had a considerable mining interest in the West Country. Meanwhile, the Hatton Garden establishment continued to prosper. In 1839 he was joined by George Matthey, who particularly fostered the Russian platinum business, and in 1851 he was taken unto partnership and the firm became the celebrated Johnson Matthey. In the following year the firm was officially recognized as one of the four Assayers to the Bank of England appointed to handle the flood of gold dust then arriving in England from the Australian gold fields. Soon after, however, ill health compelled him to retire to his Devon country house.

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SUBJECT AREA: Electricity

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After leaving an apprenticeship as a shoemaker, Sturgeon enlisted in the militia. Self-educated during service as a private in the Royal Artillery, he began to construct scientific apparatus. When he left the army in 1820 Sturgeon became an industrious writer, contributing papers to the Philosophical Magazine. In 1823 he was appointed Lecturer in Natural Science at the East India Company's Military College in Addiscombe. His invention in 1823 of an electromagnet with a horseshoe-shaped, soft iron core provided a much more concentrated magnetic field than previously obtained. An electric motor he designed in 1832 embodied his invention of the first metallic commutator. This was used to rotate a meat-roasting jack. Over an extended period he conducted researches into atmospheric electricity and also introduced the practice of amalgamating zinc in primary cells to prevent local action.

Sturgeon became Lecturer at the Adelaide Gallery, London, in 1832, an appointment of short duration, terminating when the gallery closed. In 1836 he established a monthly publication, The Annals of Electricity, Magnetism and Chemistry; and Guardian of Experimental Science, the first journal in England to be devoted to the subject. It was to this journal that James Prescot Joule contributed the results of his own researches in electromagnetism. Due to lack of financial support the publication ceased in 1843 after ten volumes had been issued. At the age of 57 Sturgeon became Superintendent of the Victoria Gallery of Practical Science in Manchester; after this gallery closed, the last five years of his life were spent in considerable poverty.

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SUBJECT AREA: Aerospace

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Cayley was born into a well-to-do Yorkshire family living at Brompton Hall. He was encouraged to study mathematics, navigation and mechanics, particularly by his mother. In 1792 he succeeded to the baronetcy and took over the daunting task of revitalizing the run-down family estate.

The first aeronautical device made by Cayley was a copy of the toy helicopter invented by the Frenchmen Launoy and Bienvenu in 1784. Cayley's version, made in 1796, convinced him that a machine could "rise in the air by mechanical means", as he later wrote. He studied the aerodynamics of flight and broke away from the unsuccessful ornithopters of his predecessors. In 1799 he scratched two sketches on a silver disc: one side of the disc showed the aerodynamic force on a wing resolved into lift and drag, and on the other side he illustrated his idea for a fixed-wing aeroplane; this disc is preserved in the Science Museum in London. In 1804 he tested a small wing on the end of a whirling arm to measure its lifting power. This led to the world's first model glider, which consisted of a simple kite (the wing) mounted on a pole with an adjustable cruciform tail. A full-size glider followed in 1809 and this flew successfully unmanned. By 1809 Cayley had also investigated the lifting properties of cambered wings and produced a low-drag aerofoil section. His aim was to produce a powered aeroplane, but no suitable engines were available. Steam-engines were too heavy, but he experimented with a gunpowder motor and invented the hot-air engine in 1807. He published details of some of his aeronautical researches in 1809–10 and in 1816 he wrote a paper on airships. Then for a period of some twenty-five years he was so busy with other activities that he largely neglected his aeronautical researches. It was not until 1843, at the age of 70, that he really had time to pursue his quest for flight. The Mechanics' Magazine of 8 April 1843 published drawings of "Sir George Cayley's Aerial Carriage", which consisted of a helicopter design with four circular lifting rotors—which could be adjusted to become wings—and two pusher propellers. In 1849 he built a full-size triplane glider which lifted a boy off the ground for a brief hop. Then in 1852 he proposed a monoplane glider which could be launched from a balloon. Late in 1853 Cayley built his "new flyer", another monoplane glider, which carried his coachman as a reluctant passenger across a dale at Brompton, Cayley became involved in public affairs and was MP for Scarborough in 1832. He also took a leading part in local scientific activities and was co-founder of the British Association for the Advancement of Science in 1831 and of the Regent Street Polytechnic Institution in 1838.

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SUBJECT AREA: Electricity

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After education at Brasenose College, Oxford, Grove was called to the Bar in 1835. Instead of immediately practising, he became involved in electrical research, devising in 1839 the cell that bears his name. He became Professor of Experimental Philosophy at the London Institution from 1840 to 1845; it was during this period that he built up his high reputation among physicists. In 1846 he published On the Correlation of Physical Forces, which was based on a course of his lectures. He returned to the practice of law, becoming a judge in 1871, but retained his interest in scientific research during his sixteen-year occupancy of the Bench. He served as a member of the Council of the Royal Society in 1846 and 1847 and played a leading part in its reform. Contributing to the science of electrochemistry, he invented the Grove cell, which together with its modification by Bunsen became an important source of electrical energy during the middle of the nineteenth century, before mechanically driven generators became available. The Grove cell had a platinum electrode immersed in strong nitric acid, separated by a porous diaphragm from a zinc electrode in weak sulphuric acid. The hydrogen formed at the platinum electrode was immediately oxidized by the acid, turning it into water. This avoided the polarization which occurred in the early copper-zinc cells. It was a very powerful primary cell with a high voltage and a low internal resistance, but it produced objectionable fumes. Grove also invented his "gas battery", the earliest fuel cell, in which a current resulted from the chemical energy released from combining oxygen and hydrogen. This was developed by Rawcliffe and others, and found applications as a power source in manned spacecraft.

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SUBJECT AREA: Broadcasting, Telecommunications

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Brought up in poor, almost Dickensian, circumstances, at the age of 13 years Heaviside, a nephew by marriage of Sir Charles Wheatstone, went to Camden House Grammar School. There he won a medal for science, but he was forced to leave because his parents could not afford the fees. After a year of private study, he began his working life in Newcastle in 1870 as a telegraph operator for an Anglo-Dutch cable company, but he had to give up after only four years because of increasing deafness. He therefore proceeded to spend his time studying theoretical aspects of electrical transmission and communication, and moved to Devon with his parents in 1889. Because the operation of many electrical circuits involves transient phenomena, he found it necessary to develop what he called operational calculus (which was essentially a form of the Laplace transform calculus) in order to determine the response to sudden voltage and current changes. In 1893 he suggested that the distortion that occurred on long-distance telephone lines could be reduced by adding loading coils at regular intervals, thus creating a matched-transmission line. Between 1893 and 1912 he produced a series of writings on electromagnetic theory, in one of which, anticipating a conclusion of Einstein's special theory of relativity, he put forward the idea that the mass of an electric charge increases with its velocity. When it was found that despite the curvature of the earth it was possible to communicate over very great distances using radio signals in the so-called "short" wavebands, Heaviside suggested the presence of a conducting layer in the ionosphere that reflected the waves back to earth. Since a similar suggestion had been made almost at the same time by Arthur Kennelly of Harvard, this layer became known as the Kennelly-Heaviside layer.

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See also: Appleton, Sir Edward Victor

SUBJECT AREA: Metallurgy

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Born into a Quaker family, he was educated at private schools; his studies included electricity and chemistry, with a bias towards metallurgy. Around 1821 Pattinson became Clerk and Assistant to Anthony Clapham, a soap-boiler of Newcastle upon Tyne. In 1825 he secured appointment as Assay Master to the lords of the manor of Alston. There he was able to pursue the subject of special interest to him, and in January 1829 he devised a method of separating silver from lead ore; however, he was prevented from developing it because of a lack of funds.

Two years later he was appointed Manager of Wentworth Beaumont's lead-works. There he was able to continue his researches, which culminated in the patent of 1833 enshrining the invention by which he is best known: a new process for extracting silver from lead by skimming crystals of pure lead with a perforated ladle from the surface of the molten silver-bearing lead, contained in a succession of cast-iron pots. The molten metal was stirred as it cooled until one pot provided a metal containing 300 oz. of silver to the ton (8,370 g to the tonne). Until that time, it was unprofitable to extract silver from lead ores containing less than 8 oz. per ton (223 g per tonne), but the Pattinson process reduced that to 2–3 oz. (56–84 g per tonne), and it therefore won wide acceptance. Pattinson resigned his post and went into partnership to establish a chemical works near Gateshead. He was able to devise two further processes of importance, one an improved method of obtaining white lead and the other a new process for manufacturing magnesia alba, or basic carbonate of magnesium. Both processes were patented in 1841.

Pattinson retired in 1858 and devoted himself to the study of astronomy, aided by a 7½ in. (19 cm) equatorial telescope that he had erected at his home at Scot's House.

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- wynalazek pisma the invention of writing

- wyrazy używane tylko w piśmie words which are used only in writing

- znać angielski w mowie i w piśmie to have a good command of spoken and written English

- umowa zawarta na piśmie a written contract

- zobowiązać się do czegoś na piśmie to make a written commitment to do sth

- przedstawić coś na piśmie to put sth in writing

- mam to na piśmie I have it in writing

- czy mogę mieć to na piśmie? can I have it in writing?

- pismo Braille’a Braille

- pismo runiczne runic writing, runes

- zapisany pismem runicznym written in runes a. runic characters

- czyjś charakter pisma sb’s (hand)writing

- krój pisma a typeface

- napisany drobnym/równym pismem written in a small/neat hand

- to jej pismo it’s her handwriting

- pismo maszynowe typescript

- pismo urzędowe an official letter

- pismo z dnia 10 maja a letter dated a. of 10 May

- pismo w sprawie czegoś a letter concerning sth

- wystosować a. skierować pismo do kogoś to send a letter to sb

- otrzymać pismo z banku/sądu to receive a letter from the bank/court

- pismo ilustrowane an illustrated magazine

- pismo młodzieżowe/literackie a teenagers’ a. young people’s/literary magazine

- pisma wszystkie Conrada the complete works of Conrad

- pisma filozoficzne philosophical writings

□ pismo alfabetyczne alphabetic writing (system)

- pismo cerkiewne a. cyrylickie Cyrillic alphabet

- pismo demotyczne demotic Egyptian script

- pismo gotyckie Gothic script

- pismo hieratyczne hieratic writing

- pismo hieroglificzne hieroglyphics

- pismo klinowe cuneiform writing

- pismo nutowe a. muzyczne Muz. musical notation

- pismo obrazkowe picture-writing

- pismo sylabowe a. sylabiczne syllabic writing

- Pismo Święte the Bible, (Holy) Scripture(s)

■ wyczuć a. zwąchać pismo nosem pot. to smell a rat

SUBJECT AREA: Canals

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Thomas Gilpin belonged to a wealthy Quaker family descended from Joseph Gilpin, who had emigrated from England in 1696. He received little formal education and was mainly self-educated in mathematics, surveying and science, in which subjects he was particularly interested. With estates in Delaware and Maryland, he was involved in farming and manufacturing. He moved to Philadelphia in 1769, which further extended his activities. With his fortune he was able to indulge his interest in science, and he was one of the original members of the American Philosophical Society in 1769. He wrote papers on the wheat fly, the seventeen-year locust and the migration of herrings. It was through this Society that he became friendly with Benjamin Franklin, to whom he wrote on 10 October 1769 setting out his proposals for and advocacy of a canal linking the Elk River on Chesapeake Bay with the Delaware River and Bay, thereby cutting off a long haul of several hundred miles for vessels around Cape Charles with a dangerous passage unto the Atlantic Ocean. Gilpin also invented a hydraulic pump that delighted Franklin very much. Gilpin had visited England in 1768 during the formation of his ideas for the Chesapeake \& Delaware Canal, and probably visited the Bridgewater Canal while there. Despite his pressing advocacy the canal had to wait until after his death, but later his son Joshua, a director from 1803 to 1824, saw the canal through many difficulties although he had resigned before the official opening in 1829. At the outbreak of the American War of Independence, in 1777, Gilpin, together with other Quakers, was arrested in Philadelphia owing to suspicions of his loyalty on the grounds that as a Quaker he refused to sign the Oath of Allegiance. He was later exiled to Winchester, Virginia, where he died in April 1778.

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SUBJECT AREA: Agricultural and food technology

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He was the youngest of the three children of Dr Arthur Young, who was at one time Chaplain to the Speaker of the House of Commons. He learned Latin and Greek at Lavenham School, and at the age of 17 was apprenticed to a mercantile house, an occupation he disliked. He first published The Theatre of the Present War in North America in 1758. He then wrote four novels and began to produce the literary magazine The Universal Museum. After his father's death he returned home to manage his father's farm, and in 1765 he married Martha Allen.

Young learned farming by experiment, and three years after his return he took over the rent of a 300 acre farm, Samford Hall in Essex. He was not a practical farmer, and was soon forced to give it up in favour of one of 100 acres (40.5 hectares) in Hertfordshire. He subsidized his farming with his writing, and in 1768 published The Farmer's Letters to the People of England. The first of his books on agricultural tours, Six Weeks Tours through the Counties of England and Wales, was published in 1771. Between 1784 and 1809 he published the Annals of Agriculture, one of whose contributors was George III, who wrote under the pseudonym of Ralph Robinson.

By this time he was corresponding with all of influence in agricultural matters, both at home and abroad. George Washington wrote frequently to Young, and George III was reputed to travel always with a copy of his book. The Empress of Russia sent students to him and had his Tours published in Russian. Young made three trips to France in 1787, 1788 and 1789–90 respectively, prior to and during the French Revolution, and his Travels in France (1792) is a remarkable account of that period, made all the more fascinating by his personal contact with people differing as widely as Mirabeau, the French revolutionary leader, and King Louis XVI.

Unfortunately, in 1811 an unsuccessful cataract operation left him blind, and he moved from London to his native Bradford, where he remained until his death.

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