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Michael Faraday
Michael Faradayполная версия

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Michael Faraday

Язык: Английский
Год издания: 2017
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This year and a half may be considered as the time of Faraday's education; it was the period of his life that best corresponds with the collegiate course of other men who have attained high distinction in the world of thought. But his University was Europe; his professors the master whom he served, and those illustrious men to whom the renown of Davy introduced the travellers. It made him personally known, also, to foreign savants, at a time when there was little intercourse between Great Britain and the Continent; and thus he was associated with the French Academy of Sciences while still young, his works found a welcome all over Europe, and some of the best representatives of foreign science became his most intimate friends.

In May 1815, his engagement at the Royal Institution was renewed, with a somewhat higher position and increased salary, which was again raised in the following year to 100l. per annum. The handwriting in the Laboratory Note-book changes in September 1815, from the large running letters of Brande to the small neat characters of Faraday, his first entry having reference to an analysis of "Dutch turf ash," and then soon occur investigations into the nature of substances bearing what must have been to him the mysterious names of Paligenetic tincture, and Baphe eugenes chruson. It is to be hoped that the constituents of this golden dye agreed together better than the Greek words of its name.

We can imagine the young philosopher taking a deeper interest in the researches on flame which his master was then carrying out, and in the gradual perfection of the safety-lamp that was to bid defiance to the explosive gases of the mine; this at least is certain, that Davy, in the preface to his celebrated paper on the subject, expresses himself "indebted to Mr. Michael Faraday for much able assistance," and that the youthful investigator carefully preserved the manuscript given him to copy.

Part of his duty, in fact, was to copy such papers; and as Sir Humphry had a habit of destroying them, he begged leave to keep the originals, and in that way collected two large volumes of precious manuscripts.

But there came a change. Hitherto he had been absorbing; now he was to emit. The knowledge which had been a source of delight to himself must now overflow as a blessing to others: and this in two ways. His first lecture was given at the City Philosophical Society on January 17, 1816, and in the same year his first paper was published in the Quarterly Journal of Science. The lecture was on the general properties of matter; the paper was an analysis of some native caustic lime from Tuscany. Neither was important in itself, but each resembled those little streams which travellers are taken to look at because they are the sources of mighty rivers, for Faraday became the prince of experimental lecturers, and his long series of published researches have won for him the highest niche in the temple of science.

When he began to investigate for himself, it could not have been easy to separate his own work from that which he was expected to do for his master. Hence no small danger of misunderstandings and jealousies; and some of these ugly attendants on rising fame did actually throw their black shadows over the intercourse between the older and the younger man of genius. In these earlier years, however, all appears to have been bright; and the following letter, written from Rome in October 1818, will give a good idea of the assistant's miscellaneous duties, and of the pleasant feelings of Davy towards him. It may be added that in another letter he is requested to send some dozens of "flies with pale bodies" to Florence, for Sir Humphry loved fly-fishing as well as philosophy.

"To Mr. Faraday

"I received the note you were so good as to address to me at Venice; and by a letter from Mr. Hatchett I find that you have found the parallax of Mr. West's Sirius, and that, as I expected, he is mistaken.

"If when you write to me you will give the 3 per cents. and long annuities, it will be enough.

"I will thank you to put the enclosed letters into the post, except those for Messrs. Morland and Messrs. Drummond, which perhaps you will be good enough to deliver.

"Mr. Hatchett's letter contained praises of you which were very gratifying to me; and pray believe me there is no one more interested in your success and welfare than your sincere well-wisher and friend,

"H. Davy.

"Rome."

It must not be supposed, however, that he had any astronomical duties, for the parallax he had found was not that of the Dog-star, but of a reputed new metal, Sirium, which was resolved in Faraday's hands into iron, nickel, and sulphur. But the impostor was not to be put down so easily, for he turned up again under the alias of Vestium; but again he was unable to escape the vigilant eye of the young detective, for one known substance after another was removed from it; and then, says Faraday, "my Vestium entirely disappeared."

His occupations during this period were multifarious enough. We must picture him to ourselves as a young-looking man of about thirty years of age, well made, and neat in his dress, his cheerfulness of disposition often breaking out in a short crispy laugh, but thoughtful enough when something important is to be done. He has to prepare the apparatus for Brande's lectures, and when the hour has arrived he stands on the right of the Professor, and helps him to produce the strange transformations of the chemical art. And conjurers, indeed, the two appear in the eyes of the youth on the left, who waits upon them, then the "laboratory assistant," now the well-known author, Mr. William Bollaert, from whom I have learnt many details of this period. When not engaged with the lectures, Faraday is manufacturing rare chemicals, or performing commercial analyses, or giving scientific evidence on trials. One of these was a famous one, arising from the Imperial Insurance Company resisting the claim of Severn and King, sugar-bakers; and in it appeared all the chemists of the day, like knights in the lists, on opposite sides, ready to break a lance with each other.

All his spare time Faraday was occupied with original work. Chlorine had a fascination for him, though the yellow choking gas would get out into the room, and he investigated its combinations with carbon, squeezed it into a liquid, and applied it successfully as a disinfectant when fatal fever broke out in the Millbank Penitentiary. Iodine too, another of Davy's elements, was made to join itself to carbon and hydrogen; and naphthaline was tormented with strong mineral acids. Long, too, he tried to harden steel and prevent its rusting, by alloying it with small quantities of platinum and the rarer metals; the boy blew the bellows till the crucibles melted, but a few ordinary razors seem to have been the best results. Far more successful was he in repeating and extending some experiments of Ampère on the mutual action of magnets and electric currents; and when, after months of work and many ingenious contrivances, the wire began to move round the magnet, and the magnet round the wire, he himself danced about the revolving metals, his face beaming with joy – a joy not unmixed with thankful pride – as he exclaimed, "There they go! there they go! we have succeeded at last." After this discovery he thought himself entitled to a treat, and proposed to his attendant a visit to the theatre. "Which shall it be?" "Oh, let it be Astley's, to see the horses." So to Astley's they went; but at the pit entrance there was a crush; a big fellow pressed roughly upon the lad, and Faraday, who could stand no injustice, ordered him to behave himself, and showed fight in defence of his young companion.

The rising philosopher indulged, too, in other recreations. He had a wonderful velocipede, a progenitor of the modern bicycle, which often took him of an early morning to Hampstead Hill. There was also his flute; and a small party for the practice of vocal music once a week at a friend's house. He sang bass correctly, both as to time and tune.

And though the City Philosophical Society was no more, the ardent group of students of nature who used to meet there were not wholly dispersed. They seem to have carried on their system of mutual improvement, and to have read the current scientific journals at Mr. Nicol's house till he married, and then alternately at those of Mr. R. H. Solly, Mr. Ainger, and Mr. Hennel, of Apothecaries' Hall, who came to a tragical end through an explosion of fulminating silver. Several of them, including Mr. Cornelius Varley, joined the Society of Arts, which at that time had committees of various sciences, and was very democratic in its management; and, finding that by pulling together they had great influence, they constituted themselves a "caucus," adopting the American word, and meeting in private. Magrath was looked upon as a "chair-maker," and Faraday in subsequent years held the office of Chairman of the Committee of Chemistry, and occasionally he presided at the large meetings of the Society.

During this time (1823) the Athenæum Club was started, not in the present Grecian palace in Pall Mall, but in a private house in Waterloo Place. Its members were the aristocracy of science, literature, and art, and they made Faraday their honorary secretary; but after a year he transferred the office to his friend Magrath, who held it for a long period.

Among the various sects into which Christendom is divided, few are less known than the Sandemanians. About a century and a half ago, when there was little light in the Presbyterian Church of Scotland, a pious minister of the name of John Glas began to preach that the Church should be governed only by the teaching of Christ and His apostles, that its connection with the State was an error, and that we ought to believe and to practise no more and no less than what we find from the New Testament that the primitive Church believed and practised. These principles, which sound very familiar in these days, procured for their asserter much obloquy and a deposition by the Church Courts, in consequence of which several separate congregations were formed in different parts of Great Britain, especially by Robert Sandeman, the son-in-law of Mr. Glas, and from him they received their common appellation. In early days they taught a simpler view of faith than was generally held at that time; it was with them a simple assent of the understanding, but produced by the Spirit of God, and its virtue depended not on anything mystical in the operation itself, but on the grandeur and beauty of the things believed. Now, however, there is little to distinguish them in doctrine from other adherents of the Puritan theology, though they certainly concede a greater deference to their elders, and attach more importance to the Lord's Supper than is usual among the Puritan Churches. Their form of worship, too, resembles that of the Presbyterians; but they hold that each congregation should have a plurality of elders, pastors, or bishops, who are unpaid men; that on every "first day of the week" they are bound to assemble, not only for prayers and preaching, but also for "breaking of bread," and putting together their weekly offerings; that the love-feast and kiss of charity should continue to be practised; that "blood and things strangled" are still forbidden as food; and that a disciple of Christ should not charge interest on loans except in the case of purely business transactions, or lay up wealth for the unknown future, but rather consider all he possesses as at the service of his poorer brethren, and be ready to perform to them such offices of kindness as in the early Church were expressed by washing one another's feet.

But what gives the remarkable character to the adherents of this sect is their perfect isolation from all Christian fellowship outside their own community, and from all external religious influence. They have never made missionary efforts to win men from the world, and have long ceased to draw to themselves members from other Churches; so they have rarely the advantage of fresh blood, or fresh views of the meaning of Scripture. They commonly intermarry, and are expected to "bear one another's burthens;" so the Church has acquired somewhat of the additional character of a large intertwined family and of a mutual benefit society. This rigid separation from the world, extending now through three or four generations, has produced a remarkable elevation of moral tone and refinement of manner; and it is said that no one unacquainted with the inner circle can conceive of the brotherly affection that reigns there, or the extent to which hospitality and material help is given without any ostentation, and received without any loss of self-respect. The body is rendered still more seclusive by demanding, not merely unity of spirit among its members, but unanimity of opinion in every Church transaction. In order to secure this, any dissentient who persists in his opinion after repeated argument is rejected; the same is also the consequence of neglect of Church duties, as well as of any grave moral offence: and in such a community excommunication is a serious social ban, and though a penitent may be received back once, he can never return a second time.

It was in the midst of this little community that Faraday received his earliest religious impressions, and among them he found his ecclesiastical home till the day of his entrance into the Church above.

Among the elders of the Sandemanian Church in London was Mr. Barnard, a silversmith, of Paternoster Row. The young philosopher became a visitor at his house, and though he had previously written, —

"What is't that comes in false deceitful guise,Making dull fools of those that 'fore were wise?'Tis Love."

– he altered his opinion in the presence of the citizen's third daughter, Sarah, and wrote to her what was certainly not the letter of a fool: —

"You know me as well or better than I do myself. You know my former prejudices and my present thoughts – you know my weaknesses, my vanity, my whole mind; you have converted me from one erroneous way, let me hope you will attempt to correct what others are wrong… Again and again I attempt to say what I feel, but I cannot. Let me, however, claim not to be the selfish being that wishes to bend your affections for his own sake only. In whatever way I can best minister to your happiness, either by assiduity or by absence, it shall be done. Do not injure me by withdrawing your friendship, or punish me for aiming to be more than a friend by making me less; and if you cannot grant me more, leave me what I possess, – but hear me."

The lady hesitated, and went to Margate. There he followed her, and they proceeded together to Dover and Shakspeare's Cliff, and he returned to London full of happiness and hope. He loved her with all the ardour of his nature, and in due course, on June 12, 1821, they were married. The bridegroom desired that there should be no bustle or noise at the wedding, and that the day should not be specially distinguished; but he calls it himself "an event which more than any other contributed to his happiness and healthful state of mind." As years rolled on the affection between husband and wife became only deeper and deeper; his bearing towards her proved it, and his letters frequently testify to it. Doubtless at any time between their marriage and his final illness he might have written to her as he did from Birmingham, at the time of the British Association: – "After all, there is no pleasure like the tranquil pleasures of home, and here – even here – the moment I leave the table, I wish I were with you in quiet. Oh! what happiness is ours! My runs into the world in this way only serve to make me esteem that happiness the more."

He took his bride home to Albemarle Street, and there they spent their wedded life; but until Mr. Barnard's death it was their custom to go every Saturday to the house of the worthy silversmith, and spend Sunday with him, returning home usually in the evening of that day. His own father died while he was at Riebau's, but his mother, a grand-looking woman, lived long afterwards, supported by her son, whom she occasionally visited at the Institution, and of whose growing reputation she was not a little proud.

With a mind calmed and strengthened by this beautiful domestic life, he continued with greater and greater enthusiasm to ask questions of Nature, and to interpret her replies to his fellow-men. Just before his marriage he had been appointed at the Royal Institution superintendent of the house and laboratory, and in February 1825, after a change in the management of the Institution, he was placed as director in a position of greater responsibility and influence. One of his first acts in this capacity was to invite the members to a scientific evening in the laboratory; this took place three or four times in 1825, and in the following years these gatherings were held every week from Feb. 3 to June 9; and though the labour devolved very much upon Faraday, other philosophers sometimes brought forward discoveries or useful inventions. Thus commenced those Friday evening meetings which have done so much to popularize the high achievements of science. Faraday's note-books are still preserved, containing the minutes of the committee-meetings every Thursday afternoon, the Duke of Somerset chairman, and he secretary; also the record of the Friday evenings themselves, who lectured, and on what subject, and what was exhibited in the library, till June 1840, when other arrangements were probably made.

The year 1827 was otherwise fruitful in lectures: in the spring, a course of twelve on chemical manipulation at the London Institution; after Easter, his first course at Albemarle Street, six lectures on chemical philosophy (he had helped Professor Brande in 1824);3 and at Christmas, his desire to convey knowledge, and his love to children, found expression in a course of six lectures to the boys and girls home for their holidays. These were a great success; indeed, he himself says they "were just what they ought to have been, both in matter and manner, – but it would not answer to give an extended course in the same spirit." He continued these juvenile lectures during nineteen years. The notes for courses of lectures were written in school copy-books, and sometimes he appends a general remark about the course, not always so favourable as the one given above. Thus he writes, "The eight lectures on the operations of the laboratory, April 1828, were not to my mind." Of the course of twelve in the spring of 1827, he says he "found matter enough in the notes for at least seventeen."

Up to 1833 Faraday was bringing the forces of nature in subjection to man on a salary of only 100l. per annum, with house, coals, and candles, as the funds of the Institution would not at that time afford more; but among the sedate habitúes of the place was a tall, jovial gentleman, who lounged to the lectures in his old-fashioned blue coat and brass buttons, grey smalls, and white stockings, who was a munificent friend in need. This was John Fuller, a member of Parliament. He founded a Professorship of Chemistry with an endowment that brings in nearly 100l. a year, and gave the first appointment to Faraday for life. When the Institution became richer, his income was increased; and when, on account of the infirmities of age, he could no longer investigate, lecture, or keep accounts, the managers insisted on his still retaining in name his official connection with the place, with his salary and his residence there. Nor indeed could they well have acted otherwise; for though the Royal Institution afforded in the first instance a congenial soil for the budding powers of Faraday, his growth soon became its strength; and eventually the blooming of his genius, and the fruit it bore, were the ornament and glory of the Institution.

It will be asked, Was this 100l. or 200l. per annum the sole income of Faraday? No; in early days he did commercial analyses, and other professional work, which paid far better than pure science. In 1830 his gains from this source amounted to 1,000l., and in 1831 to considerably more; they might easily have been increased, but at that time he made one of his most remarkable discoveries – the evolution of electricity from magnetism,4– and there seemed to lie open before him the solution of the problem how to make one force exhibit at will the phenomena of magnetism or of common or voltaic electricity. And then he had to face another problem – his own mental force might be turned either to the acquisition of a fortune, or to the following up of those great discoveries; it would not do both: which should he relinquish? The choice was deliberately made: Nature revealed to him more and more of her secrets, but his professional gains sank in 1832 to 155l. 9s., and during no subsequent year did they amount even to that.

Still his work was not entirely confined to his favourite studies. In a letter to Lord Auckland, long afterwards, he says: – "I have given up, for the last ten years or more, all professional occupation, and voluntarily resigned a large income that I might pursue in some degree my own objects of research. But in doing this I have always, as a good subject, held myself ready to assist the Government if still in my power, not for pay; for, except in one instance (and then only for the sake of the person joined with me), I refused to take it. I have the honour and pleasure of applications, and that very recently, from the Admiralty, the Ordnance, the Home Office, the Woods and Forests, and other departments, all of which I have replied to, and will reply to as long as strength is left me." He had declined the Professorship of Chemistry at the London University – now University College, – but in 1829 he accepted a lectureship at the Royal Academy, Woolwich, and held it for about twenty years. In 1836 he became scientific adviser to the Trinity House, and his letter to the Deputy Master also shows his feelings in reference to such employment: – "You have left the title and the sum in pencil. These I look at mainly as regards the character of the appointment; you will believe me to be sincere in this, when you remember my indifference to your proposition as a matter of interest, though not as a matter of kindness. In consequence of the goodwill and confidence of all around me, I can at any moment convert my time into money, but I do not require more of the latter than is sufficient for necessary purposes. The sum, therefore, of 200l. is quite enough in itself, but not if it is to be the indicator of the character of the appointment; but I think you do not view it so, and that you and I understand each other in that respect; and your letter confirms me in that opinion. The position which I presume you would wish me to hold is analogous to that of a standing counsel." For nearly thirty years Faraday continued to report on all scientific suggestions and inventions connected with lighthouses or buoys, not for personal gain or renown, but for the public good. His position was never above that of a "standing counsel." In his own words: "I do not know the exact relation of the Board of Trade and the Trinity House to each other; I am simply an adviser upon philosophical questions, and am put into action only when called upon."

In regard to the lectureship at Woolwich, Mr. Abel, his successor, writes thus: – "Faraday appears to have enjoyed his weekly trips to Woolwich, which he continued for so many years, as a source of relaxation. He was in the habit of going to Woolwich in the afternoon or evening preceding his lecture at the Military Academy, then preparing at once for his experiments, and afterwards generally taking a country ramble. The lecture was delivered early the following morning. No man was so respected, admired, and beloved as a teacher at the Military Academy in former days as Faraday. Many are the little incidents which have been communicated to me by his pupils illustrative of his charms as a lecturer, and of his kindly feelings for the youths to whom he endeavoured to impart a taste for, if not a knowledge of, science. But for some not ill-meant, though scarcely judicious, proposal to dictate modifications in his course of instruction, Faraday would probably have continued for some years longer to lecture at Woolwich. In May 1852, soon after I had been appointed his successor, Faraday wrote to me requesting the return of some tubes of condensed gases which he left at the Academy. This letter ends thus: – 'I hope you feel yourself happy and comfortable in your arrangements at the Academy, and have cause to be pleased with the change. I was ever very kindly received there, and that portion of regret which one must ever feel in concluding a long engagement would be in some degree lessened with me by hearing that you had reason to be satisfied with your duties and their acceptance. – Ever very truly yours, M. Faraday.'"

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