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Michael Faraday

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Work. Finish. Publish.
ALL THIS IS A DREAM. Still examine it by a few experiments. Nothing is too wonderful to be true, if it be consistent with the laws of nature...

Michael Faraday (22 September 1791 – 25 August 1867) was an English chemist and physicist (or natural philosopher, in the terminology of the time) who contributed to the fields of electromagnetism and electrochemistry.

Quotes

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I have far more confidence in the one man who works mentally and bodily at a matter than in the six who merely talk about it..
Nature is our kindest friend and best critic in experimental science if we only allow her intimations to fall unbiassed on our minds.
Without experiment I am nothing.
I am no poet, but if you think for yourselves, as I proceed, the facts will form a poem in your minds.
Learn that which is already known to others, and then by the light and methods which belong to science … learn for ourselves and for others; so making a fruitful return to man in the future for that which we have obtained from the men of the past.
There is no more open door by which you can enter into the study of natural philosophy than by considering the physical phenomena of a candle.
The important thing is to know how to take all things quietly.
I shall be with Christ, and that is enough.
He hath set his testimony in the heavens.
  • ALL THIS IS A DREAM. Still examine it by a few experiments. Nothing is too wonderful to be true, if it be consistent with the laws of nature; and in such things as these, experiment is the best test of such consistency.
    • Laboratory journal entry #10,040 (19 March 1849); published in The Life and Letters of Faraday (1870) Vol. II, edited by Henry Bence Jones [1], p. 248. This has sometimes been quoted partially as "Nothing is too wonderful to be true," and can be seen engraved above the doorway of the south entrance to the Humanities Building at UCLA in Los Angeles, California.[2]
  • It is the great beauty of our science, chemistry, that advancement in it, whether in a degree great or small, instead of exhausting the subjects of research, opens the doors to further and more abundant knowledge, overflowing with beauty and utility.
    • Experimental Researches in Electricity, Vol. 2 (1834) p. 257
  • I have far more confidence in the one man who works mentally and bodily at a matter than in the six who merely talk about it — and I therefore hope and am fully persuaded that you are working. Nature is our kindest friend and best critic in experimental science if we only allow her intimations to fall unbiased on our minds. Nothing is so good as an experiment which, whilst it sets an error right, gives us (as a reward for our humility in being reproved) an absolute advancement in knowledge.
    • Letter to John Tyndall (19 April 1851); letter 2411, edited by Frank A. J. L. James (1999). The correspondence of Michael Faraday, Volume 4. IET. p. 281. ISBN 0863412513. 
  • A man who makes assertions, or draws conclusions, regarding any given case, ought to be competent to investigate it. He has no right to throw the onus on others, declaring it their duly to prove him right or wrong. His duty is to demonstrate the truth of that which he asserts, or to cease from asserting. The men he calls upon to consider and judge have enough to do with themselves, in the examination, correction, or verification of their own views. The world little knows how many of the thoughts and theories which have passed through the mind of a scientific investigator have been crushed in silence and secrecy by his own severe criticism and adverse examination; that in the most successful instances not a tenth of the suggestions, the hopes, the wishes, the preliminary conclusions have been realized.
    • "Observations on Mental Education" (May 6, 1854) a lecture before His Royal Highness The Prince Consort and the Members of the Royal Institution, Lectures on Education (1855) as quoted in Faraday's Experimental Researches in Chemistry and Physics (1859) p. 486.
  • I was at first almost frightened when I saw such mathematical force made to bear upon the subject, and then wondered to see that the subject stood it so well.
    • Letter to James Clerk Maxwell (25 March 1857), commenting on Maxwell's paper titled "On Faraday's Lines of Force"; letter published in The Life of James Clerk Maxwell: With Selections from His Correspondence (1884), edited by Lewis Campbell and William Garnett, p. 200; also in Coming of Age in the Milky Way (2003) by Timothy Ferris, p. 186
  • But still try, for who knows what is possible...
    • As quoted in The Life and Letters of Faraday (1870) Vol. II, edited by Henry Bence Jones, p. 483; also engraved above the doorways of the Pfahler Hall of Science at Ursinus College in Collegeville, Pennsylvania (see photo).
  • If you would cause your view … to be acknowledged by scientific men; you would do a great service to science. If you would even get them to say yes or no to your conclusions it would help to clear the future progress. I believe some hesitate because they do not like their thoughts disturbed.
    • Life and Letters, 2:389.
  • Among those points of self-education which take up the form of mental discipline, there is one of great importance, and, moreover, difficult to deal with, because it involves an internal conflict, and equally touches our vanity and our ease. It consists in the tendency to deceive ourselves regarding all we wish for, and the necessity of resistance to these desires. It is impossible for any one who has not been constrained, by the course of his occupation and thoughts, to a habit of continual self-correction, to be aware of the amount of error in relation to judgment arising from this tendency. The force of the temptation which urges us to seek for such evidence and appearances as are in favour of our desires, and to disregard those which oppose them, is wonderfully great. In this respect we are all, more or less, active promoters of error. In place of practising wholesome self-abnegation, we ever make the wish the father to the thought: we receive as friendly that which agrees with, we resist with dislike that which opposes us; whereas the very reverse is required by every dictate of common sense.
    • Royal Institution Lecture On Mental Education (6 May 1854), as reprinted in Experimental Researches in Chemistry and Physics, by Michael Faraday, 1859, pp 474-475, emphasis verbatim.
  • I have not been at work except in turning the tables upon table turners – nor should I have done that but that so many enquiries poured in upon me that I thought it better to stop the inpouring flood by letting all know at once what my views and thoughts were. What a weak credulous, incredulous, unbelieving superstitious, bold, frightened, what a ridiculous world ours is, as far as concerns the mind of man. How full of inconsistencies, contradictions and absurdities it is. I declare that taking the average of many minds that have recently come before me (and apart from that spirit which God has placed in each) and accepting for a moment that average as a standard, I should far prefer the obedience affections and instinct of a dog before it. Do not whisper this however to others. There is one above who worketh in all things and who governs even in the midst of that misrule to which the tendencies and powers of man are so easily perverted.
  • I am no poet, but if you think for yourselves, as I proceed, the facts will form a poem in your minds.
    • Lecture notes of 1858, quoted in The Life and Letters of Faraday (1870) by Bence Jones, Vol. 2, p. 403
  • We learn by such results as these, what is the kind of education that science offers to man. It teaches us to be neglectful of nothing, not to despise the small beginnings — they precede of necessity all great things. Vesicles make clouds; they are trifles light as air, but then they make drops, and drops make showers, rain makes torrents and rivers, and these can alter the face of a country, and even keep the ocean to its proper fulness and use. It teaches a continual comparison of the small and great, and that under differences almost approaching the infinite, for the small as often contains the great in principle, as the great does the small; and thus the mind becomes comprehensive. It teaches to deduce principles carefully, to hold them firmly, or to suspend the judgment, to discover and obey law, and by it to be bold in applying to the greatest what we know of the smallest. It teaches us first by tutors and books, to learn that which is already known to others, and then by the light and methods which belong to science to learn for ourselves and for others; so making a fruitful return to man in the future for that which we have obtained from the men of the past.
    • Lecture notes of 1858, quoted in The Life and Letters of Faraday (1870) by Bence Jones, Vol. 2, p. 403
  • Bacon in his instruction tells us that the scientific student ought not to be as the ant, who gathers merely, nor as the spider who spins from her own bowels, but rather as the bee who both gathers and produces. All this is true of the teaching afforded by any part of physical science. Electricity is often called wonderful, beautiful; but it is so only in common with the other forces of nature. The beauty of electricity or of any other force is not that the power is mysterious, and unexpected, touching every sense at unawares in turn, but that it is under law, and that the taught intellect can even now govern it largely. The human mind is placed above, and not beneath it, and it is in such a point of view that the mental education afforded by science is rendered super-eminent in dignity, in practical application and utility; for by enabling the mind to apply the natural power through law, it conveys the gifts of God to man.
    • Lecture notes of 1858, quoted in The Life and Letters of Faraday (1870) by Bence Jones, Vol. 2, p. 404
  • There is no more open door by which you can enter into the study of natural philosophy than by considering the physical phenomena of a candle.
    • The Chemical History of a Candle (1860)
  • I am, I hope, very thankful that in the withdrawal of the powers and things of life, the good hope is left with me, which makes the contemplation of death a comfort — not a fear. Such peace is alone the gift of God, and as it is He who gives it, why should we be afraid? His unspeakable gift in His beloved Son is the ground of no doubtful hope, and there is the rest for those who (like you and me) are drawing near the latter end of our terms here below. I do not know, however why I should join you with me in years. I forget your age, but this I know (and feel as well) that next Sabbath day (the 22nd) I shall complete my 70th year. I can hardly think myself so old as I write to you — so much of cheerful spirit, ease and general health is left to me, and if my memory fails, why it causes that I forget troubles as well as pleasure and the end is, I am happy and content.
    • Letter to Auguste de la Rive (1861), as quoted in The Philosopher's Tree : A Selection of Michael Faraday's Writings (1999) edited by Peter Day, p. 199
  • The secret is comprised in three words — Work, Finish, Publish.
    • His well-known advice to the young William Crookes, who had asked him the secret of his success as a scientific investigator, as quoted in Michael Faraday (1874) by John Hall Gladstone, Section IV : His Method of Working, p. 123; this is also often rendered: "Work. Finish. Publish."
  • Speculations? I have none. I am resting on certainties. I know whom I have believed and am persuaded that he is able to keep that which I have committed unto him against that day.
    • When asked about his speculations on life beyond death, as quoted in The Homiletic Review‎ (April 1896), p. 442
  • The important thing is to know how to take all things quietly.
    • As quoted in Treasury of the Christian Faith : An Encyclopedic Handbook of the Range and Witness of Christianity (1949) by Stanley Irving Stuber and Thomas Curtis Clark, p. 807
  • The lecturer should give the audience full reason to believe that all his powers have been exerted for their pleasure and instruction.
    • As quoted in A Random Walk in Science (1973) by Robert L. Weber, p. 76
  • As when on some secluded branch in forest far and wide sits perched an owl, who, full of self-conceit and self-created wisdom, explains, comments, condemns, ordains and order things not understood, yet full of importance still holds forth to stocks and stones around — so sits and scribbles Mike.
    • Of himself and his writing abilities, as quoted in A Random Walk in Science (1973) by Robert L. Weber, p. 76
  • Whereas, according to the declaration of that true man of the world Talleyrand, the use of language is to conceal the thoughts; this is to declare in the present instance, when I say I am not able to bear much talking, it means really, and without any mistake, or equivocation, or oblique meaning, or implication, or subterfuge, or omission, that I am not able; being at present rather weak in the head, and able to work no more.
  • I shall be with Christ, and that is enough.
    • Last words, answering the question "Have you ever pondered by yourself what will be your occupation in the next world?", as quoted in The Speaker's QuoteBook (1997) edited by Roy B. Zuck, p. 108


Disputed

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  • An intimate friend of Faraday once described to me how, when Faraday was endeavouring to explain to Gladstone and several others an important new discovery in science Gladstone's only commentary was “but, after all, what use is it?” “Why, sir,” replied Faraday, “there is every probability that you will soon be able to tax it!”
    • By William Edward Hartpole Lecky, in Democracy and Liberty (1899, p. xxxi). Lecky's account is then subsequently quoted by R. A. Gregory in Discovery Or The Spirit And Service Of Science (1918, p. 3). Note that Lecky's account makes no reference to electricity. Subsequently, Alan Mackay (in The Harvest of a Quiet Eye : A Selection of Scientific Quotations, 1977, p. 56) gives the variant, "One day, sir, you may tax it", and adds the embellishment that the discovery is electricity. Mackay claims his source is Gregory (Discovery), but Gregory's quote differs and and makes no mention of electricity. Oxford Essential Quotations correctly refers to Lecky but also incorrectly adds the embellishment that the discovery was electricity. According to Snopes in "Long Ago and Faraday", it is most likely an invented quotation, but that Snopes article doesn't seem to be aware of Lecky's account.

Quotes about Faraday

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Whatever our opinions, they do not alter nor derange the laws of nature.
Coulometer: it was not until after Faraday's death that the significance of his laws of electrolysis for atomic theory was realized.
If the idea of physical reality had ceased to be purely atomic, it still remained for the time being purely mechanistic; people still tried to explain all events as the motion of inert masses; indeed no other way of looking at things seemed conceivable. Then came the great change, which will be associated for all time with the names of Faraday, Clerk Maxwell, and Hertz. ~ Albert Einstein
Faraday is, and must always remain, the father of that enlarged science of electro-magnetism. ~ James Clerk Maxwell
Faraday carried on experimenting until he was over 70. ~ Brian L. Silver
Underneath his sweetness and gentleness was the heat of a volcano. ~ John Tyndall
The experimental researches of Faraday are so voluminous, their descriptions are so detailed, and their wealth of illustration is so great, as to render it a heavy labour to master them. ~ John Tyndall
  • Faraday was the first scientist to realise the enormous importance of the electromagnetic field. He saw in it a reality of a new category differing from matter. It was capable of transmitting effects from place to place, and was not to be likened to a mere mathematical fiction such as the gravitational field was then assumed to be. In his opinion, the phenomena of electricity and magnetism should be approached via the field rather than via the charged bodies and currents. In other words, according to Faraday, when a current was flowing along a wire, the most important aspect of the phenomenon lay not in the current itself but in the fields of electric and magnetic force distributed throughout space in the current's vicinity. It is this elevation of the field to a position of preeminence that is often called the pure physics of the field. Faraday was not a mathematician and was unable to co-ordinate the phenomena he foresaw in a mathematical way, and derive the full benefit from his ideas. Before dying, however, he entrusted this task to his colleague Maxwell; and one of the most astonishing theories of science, eclipsed only in recent years by Einstein's theory of relativity, was the outcome.
  • If the idea of physical reality had ceased to be purely atomic, it still remained for the time being purely mechanistic; people still tried to explain all events as the motion of inert masses; indeed no other way of looking at things seemed conceivable. Then came the great change, which will be associated for all time with the names of Faraday, Clerk Maxwell, and Hertz.
    • Albert Einstein, "Clerk Maxwell's Influence on the Evolution of the Idea of Physical Reality" in Essays in Science (1934)
  • Would Faraday have discovered the law of electromagnetic induction if he had received a regular college education?
    • Albert Einstein, "On the Generalized Theory of Gravitation," Scientific American 182, no. 4 (April 1950): 14.
  • With the realization that electric currents make magnetic fields, people immediately suggested that, somehow or other, magnets might also make electric fields. Various experiments were tried. For example, two wires were placed parallel to each other and a current was passed through one of them in the hope of finding a current in the other. The thought was that the magnetic field might in some way drag the electrons along in the second wire, giving some such law as "likes prefer to move alike." With the largest available current and the most sensitive galvanometer to detect any current, the result was negative. Large magnets next to wires also produced no observed effects. Finally, Faraday discovered in 1840 the essential feature that had been missed—that electric effects exist only when there is something changing. If one of a pair of wires has a changing current, a current is induced in the other, or if a magnet is moved near an electric circuit, there is a current. We say that currents are induced. This was the induction effect discovered by Faraday. It transformed the rather dull subject of static fields into a very exciting dynamic subject with an enormous range of wonderful phenomena.
  • When his faculties were fading fast, he would sit long at the western window, watching the glories of the sunset; and one day, when his wife drew his attention to a beautiful rainbow that spanned the sky, he looked beyond the falling shower and the many-colored arch, and observed, "He hath set his testimony in the heavens." On August 25, 1867, quietly, almost imperceptively, came the release. There was a philosopher less on earth, and a saint more in heaven.
  • Study of the conduction of electricity in liquids became possible at the beginning of the nineteenth century, following the discovery of the electrolytic cell by Volta in 1800, which provided the first continuous source of electric current. It was soon discovered that the conduction of electricity by solutions is accompanied by chemical reactions at the electrodes which serve to conduct the current into and out of the solution. Nicholson and Carlisle demonstrated the decomposition of water into hydrogen and oxygen by a current in 1801. Davy's discovery of sodium and potassium metals by electrolysis of moist soda and [caustic] potash was a striking example of the novelty of electrochemical decomposition. Many of the phenomena of electrolysis were already known when Michael Faraday began his researches.
    It was the quantitative relationship between electrochemical change and current which interested Faraday     and enabled him to correlate the mass of experimental data that had accumulated since 1800. Faraday's laws of electrolysis, which were published in 1833, state:
    (1) that the amount of chemical decomposition produced by an electric current (that is, the mass of substance deposited or dissolved at an electrode) is proportional to the quantity of electricity passed.
    (2) that the amounts of different substances released or dissolved at electrodes by the same quantity of electricity are proportional to their chemical equivalents.
    From the second law, it follows that the amount of electricity required to liberate or dissolve one equivalent weight of any substance by electrolysis is constant.
    It was not until after Faraday's death that the significance of his laws of electrolysis for atomic theory was realized. In 1881 von Helmholtz pointed out that if elementary substances are composed of atoms, it follows from Faraday's laws of electrolysis that electricity also is composed of elementary portions which behave like atoms of electricity. Investigations on the conduction of electricity by gases led to the identification of the electron as the fundamental unit of electricity at the end of the century. Faraday's positive and negative ions are therefore atoms (or groups of atoms or radicals)) with a deficiency or an excess of an integral number of electrons, where the integral number is the valency of the atom. The ions move in opposite directions through the solution to the electrodes where their charges are neutralised, causing them to be discharged to neutral atoms or radicals. These are the primary electrode reactions, of which the deposition of silver on a platinum cathode in the silver coulometer is a typical example.
  • He was little interested mathematics or theory; for example, when his ideas on magnetic fields were extensively developed later by James Clerk Maxwell (1831-1879), Faraday was little concerned with the results. His own scientific career was characterized by simple ideas and simple experiments.
    • Aaron J. Ihde, The Development of Modern Chemistry, Chapter V, p. 136
  • In 1831 his original researches began to center about the relation of electricity and magnetism. ...Even as early as 1824 he had noticed the effects of a current of electricity upon a magnet. Now he found that this electrical action could be increased if the wire carrying the current was made into a coil. From that point he went on to study the push or pulling action of the coil upon the magnet, the effect of having a coil of more turns, and a way by which the coil and magnet, if free to move, could be made to move around each other. He was working out the principles that operate in today's electric motors. By 1831 he had reversed the problem... He had shown that the mere motion of the magnet within a closed-end coil was enough to set moving through the coil a small current that had not been there before. He called this new current an "induced" one and proceeded to study how the current could be increased in its quantity and intensity. The experimental results were revolutionary. The principles of induction discovered by Faraday are used today in telephones, induction coils, electric generators, transformers, the motors of electric clocks, and dozens of other pieces of electrical equipment.
    • Keith Gordon Irwin, "Michael Faraday and His Work," (Nov, 1959) Introduction to the Explorer Edition, The Chemical HIstory of a Candle (1960) by Michael Faraday
  • As a philosopher, his first great characteristic was the trust which he put in facts. He said of himself, "In early life I was a very lively imaginative person, who could believe in the Arabian Nights as easily as in the Encyclopedia, but facts were important to me, and saved me. I could trust a fact." Over and over again he showed his love of experiments in his writings and lectures: "Without experiment I am nothing." "But still try, for who knows what is possible?" "All our theories are fixed upon uncertain data, and all of them want alteration and support from facts." "One thing, however, is fortunate, which is, that whatever our opinions, they do not alter nor derange the laws of nature."
    His second great characteristic was his imagination. It rose sometimes to divination, or scientific second sight, and led him to anticipate results that he or others afterwards proved to be true.
  • I have been favoured by a sight of the forthcoming series of Dr. Faraday's admirable "Researches;" in which that assiduous and successful philosopher labours to prove by experiment that electrical induction is transmitted to distant bodies by intervening matter.
  • Faraday is, and must always remain, the father of that enlarged science of electro-magnetism.
  • To estimate the intensity of Faraday's scientific power, we cannot do better than read the first and second series of his Researches and compare them...with the whole course of electro-magnetic science since, which has added no new idea to those set forth, but has only verified the truth and scientific value of every one of them.
  • It is not till we attempt to bring the theoretical part of our training into contact with the practical that we begin to experience the full effect of what Faraday has called "mental inertia"—not only the difficulty of recognising, among the concrete objects before us, the abstract relation which we have learned from books, but the distracting pain of wrenching the mind away from the symbols to the objects, and from the objects back to the symbols. This however is the price we have to pay for new ideas.
  • His health [was] probably affected by mercury poisoning. This was a then unrealized health hazard that undoubtedly affected many nineteenth-century scientists who worked in the laboratory, where spilled mercury often accumulated between and beneath floorboards and generated a permanent atmosphere of mercury vapor.
    • Brian L. Silver, The Ascent of Science (1998)
  • Faraday carried on experimenting until he was over 70. He died in 1867, the year that Das Kapital was published, and he was buried in Highgate cemetery... where Marx was to join him later.
    • Brian L. Silver, The Ascent of Science (1998)
  • Gradually... during the second half of the nineteenth century, the uncomfortable feeling of dislike of the action at a distance, which had been so strong in Huygens and other contemporaries of Newton, but had subsided during the eighteenth century, began to emerge again, and gained strength rapidly.
    This was favoured by the purely mathematical transformation (which can be compared in a sense with that from the Ptolemaic to the Copernican system), replacing Newton's finite equations by the differential equations, the potential becoming the primary concept, instead of the force, which is only the gradient of the potential. These ideas, of course, arose first in the theory of electricity and magnetism or perhaps one should say in the brain of Faraday.
  • A point highly illustrative of the character of Faraday now comes into view. He gave an account of his discovery of Magneto-electricity in a letter to his friend M. Hachette, of Paris, who communicated the letter to the Academy of Sciences. The letter was translated and published ; and immediately afterwards two distinguished Italian philosophers took up the subject, made numerous experiments, and published their results before the complete memoirs of Faraday had met the public eye. This evidently irritated him. He reprinted the paper of the learned Italians in the Philosophical Magazine accompanied by sharp critical notes from himself. He also wrote a letter dated Dec. 1,1832, to Gay Lussac, who was then one of the editors of the Annales de Chimie in which he analysed the results of the Italian philosophers, pointing out their errors, and' defending himself from what he regarded as imputations on his character. The style of this letter is unexceptionable, for Faraday could not write otherwise than as a gentleman; but the letter shows that had he willed it he could have hit hard. We have heard much of Faraday's gentleness and sweetness and tenderness. It is all true, but it is very incomplete. You cannot resolve a powerful nature into these elements, and Faraday's character would have been less admirable than it was had it not embraced forces and tendencies to which the silky adjectives "gentle" and "tender" would by no means apply. Underneath his sweetness and gentleness was the heat of a volcano. He was a man of excitable and fiery nature; but through high self-discipline he had converted the fire into a central glow and motive power of life, instead of permitting it to waste itself in useless passion. "He that is slow to anger" saith the sage, "is greater than the mighty, and he that ruleth his own spirit than he that taketh a city." Faraday was not slow to anger, but he completely ruled his own spirit, and thus, though he took no cities, he captivated all hearts.
    • John Tyndall, in Faraday as a Discoverer (1868) "Points of Character", p. 37
  • The experimental researches of Faraday are so voluminous, their descriptions are so detailed, and their wealth of illustration is so great, as to render it a heavy labour to master them. The multiplication of proofs, necessary and interesting when the new truths had to be established, are however less needful now when these truths have become household words in science.
    • John Tyndall, in Faraday as a Discoverer (1868), Preface to the Second Edition (December 1869)
  • The conception of lines of force was introduced by Faraday to form a mental picture of the processes going on in the electric field. To him these lines were not mere mathematical abstractions. He ascribed to them properties that gave them a real physical significance. They terminate on opposite charges, are always in a state of tension, tending to shorten themselves, and are mutually repellent. The direction of a line of force at any point gives the direction of the field at that point. With the help of these properties of lines of force it is possible to obtain an idea of the distribution of the intensity of the field surrounding electrically charged bodies.
    The idea of tubes of force has been introduced to make the method of Faraday metrical rather than merely descriptive. A tube of force is obtained by drawing a number of lines of force through the boundary of any small closed curve. The lines then form a tubular surface, which, it can be proved, will never be cut by any lines of force, and the extremities of which enclose equal and opposite charges. By properly choosing the area of the surface enclosed by the curve through which the lines are drawn the extremities of the tube can be made to enclose unit charge. Such a unit tube is called a Faraday tube. Maxwell and J. J. Thomson have made an exhaustive study of these tubes of force and expressed their properties in mathematical terms. The result that interests us here is that a tube of force behaves as though it had inertia, so that in order to move a tube work must be done. This explains why a charge behaves as if it had mass. It must be remarked that the conception of tubes of forces is used here merely to aid in understanding the phenomena. Whether or not tubes of force, or even the ether, possess any physical significance is a question. Modern developments seem to indicate that this question must be answered in the negative.
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