James Clerk Maxwell citáty

James Clerk Maxwell foto
0   0

James Clerk Maxwell

Datum narození: 13. červen 1831
Datum úmrtí: 5. listopad 1879

James Clerk Maxwell byl skotský všestranný fyzik . Jeho nejvýznamnějším objevem je obecný matematický popis elektromagnetického pole dnes známý jako Maxwellovy rovnice. Publikoval první barevnou fotografii jako důkaz teorie aditivního míchání barev.

Citáty James Clerk Maxwell

„The whole science of heat is founded Thermometry and Calorimetry, and when these operations are understood we may proceed to the third step, which is the investigation of those relations between the thermal and the mechanical properties of substances which form the subject of Thermodynamics.“

—  James Clerk Maxwell

The whole of this part of the subject depends on the consideration of the Intrinsic Energy of a system of bodies, as depending on the temperature and physical state, as well as the form, motion, and relative position of these bodies. Of this energy, however, only a part is available for the purpose of producing mechanical work, and though the energy itself is indestructible, the available part is liable to diminution by the action of certain natural processes, such as conduction and radiation of heat, friction, and viscosity. These processes, by which energy is rendered unavailable as a source of work, are classed together under the name of the Dissipation of Energy.
Theory of Heat http://books.google.com/books?id=DqAAAAAAMAAJ "Preface" (1871)

„In every branch of knowledge the progress is proportional to the amount of facts on which to build“

—  James Clerk Maxwell

Letter to Lewis Campbell (9 November 1851) in Ch. 6 : Undergraduate Life At Cambridge October 1850 to January 1854 — ÆT. 19-22, p. 159
Kontext: In every branch of knowledge the progress is proportional to the amount of facts on which to build, and therefore to the facility of obtaining data.

„Happiness and Misery must inevitably increase with increasing Power and Knowledge“

—  James Clerk Maxwell

Letter to Lewis Campbell (9 November 1851) in Ch. 6 : Undergraduate Life At Cambridge October 1850 to January 1854 — ÆT. 19-22, p. 158
Kontext: I believe, with the Westminster Divines and their predecessors ad Infinitum that "Man's chief end is to glorify God and to enjoy him for ever."
That for this end to every man has been given a progressively increasing power of communication with other creatures.
That with his powers his susceptibilities increase. That happiness is indissolubly connected with the full exercise of these powers in their intended direction. That Happiness and Misery must inevitably increase with increasing Power and Knowledge. That the translation from the one course to the other is essentially miraculous, while the progress is natural. But the subject is too high. I will not, however, stop short, but proceed to Intellectual Pursuits.

„I mean—that I have the capacity of being more wicked than any example that man could set me, and that if I escape, it is only by God's grace“

—  James Clerk Maxwell

Letter to Rev. C. B. Tayler ( 8 July 1853) in Ch. 6 : Undergraduate Life At Cambridge October 1850 to January 1854 — ÆT. 19-22, p. 189
Kontext: I maintain that all the evil influences that I can trace have been internal and not external, you know what I mean—that I have the capacity of being more wicked than any example that man could set me, and that if I escape, it is only by God's grace helping me to get rid of myself, partially in science, more completely in society, — but not perfectly except by committing myself to God as the instrument of His will, not doubtfully, but in the certain hope that that Will will be plain enough at the proper time. Nevertheless, you see things from the outside directly, and I only by reflexion, so I hope that you will not tell me you have little fault to find with me, without finding that little and communicating it.

„This velocity is so nearly that of light, that it seems we have strong reason to conclude that light itself“

—  James Clerk Maxwell, A Dynamical Theory of the Electromagnetic Field

A Dynamical Theory of the Electromagnetic Field (1864), §20.
Kontext: The general equations are next applied to the case of a magnetic disturbance propagated through a non-conductive field, and it is shown that the only disturbances which can be so propagated are those which are transverse to the direction of propagation, and that the velocity of propagation is the velocity v, found from experiments such as those of Weber, which expresses the number of electrostatic units of electricity which are contained in one electromagnetic unit. This velocity is so nearly that of light, that it seems we have strong reason to conclude that light itself (including radiant heat, and other radiations if any) is an electromagnetic disturbance in the form of waves propagated through the electromagnetic field according to electromagnetic laws.

„I hope that you will not tell me you have little fault to find with me, without finding that little and communicating it.“

—  James Clerk Maxwell

Letter to Rev. C. B. Tayler ( 8 July 1853) in Ch. 6 : Undergraduate Life At Cambridge October 1850 to January 1854 — ÆT. 19-22, p. 189
Kontext: I maintain that all the evil influences that I can trace have been internal and not external, you know what I mean—that I have the capacity of being more wicked than any example that man could set me, and that if I escape, it is only by God's grace helping me to get rid of myself, partially in science, more completely in society, — but not perfectly except by committing myself to God as the instrument of His will, not doubtfully, but in the certain hope that that Will will be plain enough at the proper time. Nevertheless, you see things from the outside directly, and I only by reflexion, so I hope that you will not tell me you have little fault to find with me, without finding that little and communicating it.

„Words from empty words they sever—
Words of Truth from words of Pride.“

—  James Clerk Maxwell

Part III Poems, "Reflection from Various Surfaces" (April 18, 1853)
Kontext: By the hollow mauntain-side
Questions strange I shout for ever,
While echoes far and wide
Seem to mock my vain endeavour;
Still I shout, for though they never
Cast my borrowed voice aside,
Words from empty words they sever—
Words of Truth from words of Pride.

„Colour as perceived by us is a function of three independent variables“

—  James Clerk Maxwell

Maxwell, in a letter to William Thomson, The Scientific Letters and Papers of James Clerk Maxwell: 1846-1862 (1990), p. 245.
Kontext: Colour as perceived by us is a function of three independent variables at least three are I think sufficient, but time will show if I thrive.

Help us translate English quotes

Discover interesting quotes and translate them.

Start translating

„But we have no right to think thus of the unsearchable riches of creation, or of the untried fertility of those fresh minds into which these riches will continue to be poured.“

—  James Clerk Maxwell

Introductory Lecture on Experimental Physics held at Cambridge in October 1871, re-edited by W. D. Niven (2003) in Volume 2 of The Scientific Papers of James Clerk Maxwell, Courier Dover Publications, p. 241; this has sometimes been misquoted in a way which considerably alters its intent: "in a few years, all the great physical constants will have been approximately estimated, and … the only occupation which will then be left to the men of science will be to carry these measurement to another place of decimals."
Kontext: This characteristic of modern experiments — that they consist principally of measurements — is so prominent, that the opinion seems to have got abroad, that in a few years all the great physical constants will have been approximately estimated, and that the only occupation which will then be left to men of science will be to carry on these measurements to another place of decimals. If this is really the state of things to which we are approaching, our Laboratory may perhaps become celebrated as a place of conscientious labour and consummate skill, but it will be out of place in the University, and ought rather to be classed with the other great workshops of our country, where equal ability is directed to more useful ends.
But we have no right to think thus of the unsearchable riches of creation, or of the untried fertility of those fresh minds into which these riches will continue to be poured. It may possibly be true that, in some of those fields of discovery which lie open to such rough observations as can be made without artificial methods, the great explorers of former times have appropriated most of what is valuable, and that the gleanings which remain are sought after, rather for their abstruseness, than for their intrinsic worth. But the history of science shews that even during the phase of her progress in which she devotes herself to improving the accuracy of the numerical measurement of quantities with which she has long been familiar, she is preparing the materials for the subjugation of the new regions, which would have remained unknown if she had been contented with the rough methods of her early pioneers. I might bring forward instances gathered from every branch of science, shewing how the labour of careful measurement has been rewarded by the discovery of new fields of research, and by the development of new scientific ideas. But the history of the science of terrestrial magnetism affords us a sufficient example of what may be done by experiments in concert, such as we hope some day to perform in our Laboratory.

„Mathematicians may flatter themselves that they possess new ideas which mere human language is yet unable to express. Let them make the effort to express these ideas in appropriate words without the aid of symbols, and if they succeed they will not only lay us laymen under a lasting obligation, but we venture to say, they will find themselves very much enlightened during the process, and will even be doubtful whether the ideas as expressed in symbols had ever quite found their way out of the equations of their minds.“

—  James Clerk Maxwell

"Thomson & Tait's Natural Philosophy" in Nature, Vol. 7 (Mar. 27, 1873) A review of Elements of Natural Philosophy https://archive.org/details/elementsnatural00kelvgoog (1873) by Sir W. Thomson, P. G. Tait. See Nature, Vol. 7-8, https://archive.org/details/nature7818721873lock Nov. 1872-Oct. 1873, pp. 399-400, or The Scientific Papers of James Clerk Maxwell, p. 328. https://books.google.com/books?id=lzlRAAAAYAAJ&pg=PA328

„The equations at which we arrive must be such that a person of any nation, by substituting the numerical values of the quantities as measured by his own national units, would obtain a true result.“

—  James Clerk Maxwell

Encyclopedia Brittanica article, quoted by Patricia Fara in Science A Four Thousand Year History (2009) citing Simon Schaffer article in The Values of Precision (1995) ed. M. Norton Wise

„I have also cleared the electromagnetic theory of light from all unwarrantable assumption, so that we may safely determine the velocity of light by measuring the attraction between bodies kept at a given difference of potential, the value of which is known in electromagnetic measure.“

—  James Clerk Maxwell

Letter to C. Hockin, Esq. (Sept 7, 1864) as quoted by Lewis Campbell, William Garnett, The Life of James Clerk Maxwell: With Selections from His Correspondence and Occasional Writings https://books.google.com/books?id=B7gEAAAAYAAJ (1884)

„We may find illustrations of the highest doctrines of science in games and gymnastics, in travelling by land and by water, in storms of the air and of the sea, and wherever there is matter in motion.“

—  James Clerk Maxwell

Introductory Lecture on Experimental Physics held at Cambridge in October 1871, re-edited by W. D. Niven (2003) in Volume 2 of The Scientific Papers of James Clerk Maxwell, Courier Dover Publications, p. 243.

„He that would enjoy life and act with freedom must have the work of the day continually before his eyes. Not yesterday's work, lest he fall into despair; nor to-morrow's, lest he become a visionary—not that which ends with the day, which is a worldly work; nor yet that only which remains to eternity, for by it he cannot shape his actions.
Happy is the man who can recognise in the work of to-day a connected portion of the work of life and an embodiment of the work of Eternity. The foundations of his confidence are unchangeable, for he has been made a partaker of Infinity. He strenuously works out his daily enterprises because the present is given him for a possession.
Thus ought Man to be an impersonation of the divine process of nature, and to show forth the union of the infinite with the finite, not slighting his temporal existence, remembering that in it only is individual action possible; nor yet shutting out from his view that which is eternal, knowing that Time is a mystery which man cannot endure to contemplate until eternal Truth enlighten it.“

—  James Clerk Maxwell

Paper communicated to Frederic Farrar (1854) Æt. 23, as quoted in Lewis Campbell, William Garnett, The Life of James Clerk Maxwell: With Selections from His Correspondence and Occasional Writings (1884) pp. 144-145, https://books.google.com/books?id=B7gEAAAAYAAJ&pg=PA144 and in Richard Glazebrook, James Clerk Maxwell and Modern Physics (1896) pp. 39-40. https://books.google.com/books?id=hbcEAAAAYAAJ&pg=PA39

„How the learned fool would wonder
Were he now to see his blunder,
When he put his reason under
The control of worldly Pride.“

—  James Clerk Maxwell

Part III Poems, "A Vision Of a Wrangler, of a University, of Pedantry, and of Philosophy. " (November 10, 1852)

„Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Etiam egestas wisi a erat. Morbi imperdiet, mauris ac auctor dictum.“

Podobní autoři

Walter Scott foto
Walter Scott4
skotský literát
Thomas Carlyle foto
Thomas Carlyle41
skotský filozof, satirik, esejista, historik a pedagog
Robert Louis Stevenson foto
Robert Louis Stevenson19
skotský romanopisec, básník, esejista a autor cestopisů
Pierre Curie foto
Pierre Curie1
francouzský fyzik
Andrew Carnegie foto
Andrew Carnegie22
americký obchodník a filantrop
David Livingstone foto
David Livingstone1
skotský misionář, lékař a cestovatel
Alexander Bain foto
Alexander Bain1
skotský filozof a pedagog
William Hamilton foto
William Hamilton1
skotský filozof a logik
Johann Wilhelm Ritter foto
Johann Wilhelm Ritter1
německý fyzik
Christian Doppler foto
Christian Doppler1
rakouský fyzik a matematik
Dnešní výročí
Marilyn Monroe foto
Marilyn Monroe77
americká herečka, modelka a zpěvačka 1926 - 1962
Guy De Maupassant foto
Guy De Maupassant29
francouzský spisovatel 1850 - 1893
Alec Guinness foto
Alec Guinness8
anglický herec 1914 - 2000
František Ladislav Čelakovský foto
František Ladislav Čelakovský18
český básník a překladatel 1799 - 1852
Dalších 49 dnešních výročí
Podobní autoři
Walter Scott foto
Walter Scott4
skotský literát
Thomas Carlyle foto
Thomas Carlyle41
skotský filozof, satirik, esejista, historik a pedagog
Robert Louis Stevenson foto
Robert Louis Stevenson19
skotský romanopisec, básník, esejista a autor cestopisů
Pierre Curie foto
Pierre Curie1
francouzský fyzik
Andrew Carnegie foto
Andrew Carnegie22
americký obchodník a filantrop