The Life of William Thomson, Baron Kelvin of Largs, 2 tomasMacmillan, 1910 |
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The Life of William Thomson, Baron Kelvin of Largs, 2 tomas Silvanus Phillips Thompson Visos knygos peržiūra - 1910 |
The Life of William Thomson, Baron Kelvin of Largs, 2 tomas Silvanus Phillips Thompson Visos knygos peržiūra - 1910 |
The Life of William Thomson, Baron Kelvin of Largs, 2 tomas Silvanus Phillips Thompson Visos knygos peržiūra - 1910 |
Pagrindiniai terminai ir frazės
Admiralty amperes Athenæum Club atoms Baltimore Lectures Bottomley British Association cable Cambridge College compass cruise Darwin DEAR dynamical earth Edinburgh elastic solid electric light electrions electromagnetic electrostatic energy experiments force galvanometer Gareloch George Darwin give globe going gyrostat Helmholtz Honorary hope Institution instruments interesting James June kinetic kinetic theory laboratory Lady Kelvin Lady Thomson Lalla Rookh letter London Lord Kelvin Lord Rayleigh luminiferous ether magnetic Math mathematical matter measuring meeting ment molecular molecules motion Natural Philosophy needles Netherhall paper Peterhouse Phil Phys physical Popular Lectures present President Prof Professor propagation result Roshven rotation Royal Society sail scientific Scotland ship Siemens Sir William Thomson Sir William wrote sounding machine Tait Telegraph tell theory of light thing tion to-day truly University of Glasgow velocity vibrations waves week wire write yacht
Populiarios ištraukos
782 psl. - I often say that when you can measure what you are speaking about and express it in numbers you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind...
595 psl. - Careful enough scrutiny has in every case up to the present day discovered life as antecedent to life. Dead matter cannot become living without coming under the influence of matter previously alive." " This," said Sir William, " seems to me as sure a teaching of science as the law of gravitation.
590 psl. - Accurate and minute measurement seems to the non-scientific imagination a less lofty and dignified work than looking for something new. But nearly all the grandest discoveries of science have been but the rewards of accurate measurement -and patient long-continued labour in the minute sifting of numerical results.
596 psl. - Hence, and because we all confidently believe that there are at present, and have been from time immemorial, many worlds of life besides our own, we must regard it as probable in the highest degree that there are countless seedbearing meteoric stones moving about through space. If, at the present instant, no life existed upon this earth, one such stone falling upon it might, by what we blindly call natural causes, lead to its becoming covered with vegetation.
1060 psl. - One word characterises the most strenuous of the efforts for the advancement of science that I have made perseveringly during fifty-five years ; that word is FAILURE. I know no more of electric and magnetic force, or of the relation between ether, electricity, and ponderable matter, or of chemical affinity, than I knew and tried to teach to my students of natural philosophy fifty years ago in my first session as Professor.
1016 psl. - In a dielectric under the action of electromotive force, we may conceive that the electricity in each molecule is so displaced that one side is rendered positively and the other negatively electrical, but that the electricity remains entirely connected with the molecule, and does not pass from one molecule to another. The effect of this action on the whole dielectric mass is to produce a general displacement of electricity in a certain direction.
854 psl. - The only contribution of dynamics to theoretical biology is absolute negation of automatic commencement or automatic maintenance of life.
798 psl. - You can imagine particles of something, the thing whose motion constitutes light. This thing we call the luminiferous ether. That is the only substance we are confident of in dynamics. One thing we are sure of, and that is the reality and substantiality of the luminiferous ether.
1114 psl. - With the feeling expressed in these two sentences I most cordially sympathize. I have omitted two sentences which come between them, describing briefly the hypothesis of " the origin of species by natural selection...
809 psl. - In the first place, we must not listen to any suggestion that we must look upon the luminiferous ether as an ideal way of putting the thing. A real matter between us and the remotest stars I believe there is, and that light consists-/ of real motions of that matter — motions just such as are described by Fresnel and Young, motions in the way of transverse vibrations. If I knew what the magnetic theory of light is, I might be able ' to think of it in relation to the fundamental principles of the...