Philosophical MagazineTaylor & Francis, 1872 |
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Common terms and phrases
aberration Aberration of Light according acid action æther Ampèrian angle atoms bismuth bodies boiling chloride coil combining number compounds condensation conductor connexion consequently constant copper corresponding curve cylinder Deviations direction disk displacement distance disturbance earth effect electrical current electrical particles electromotive force element equal equation exist experiments expression fork formula galvanometer gaseous given glass greater Hence hydrogen increase intensity kinetic energy light liquid magnetic masses Mean measured metals millimetre millims molecular currents molecules motion needle negative observed obtain oxygen phenomena Phil plane plate Pogg polariscope polarization positive pressure prism produced proportional quantity rays reflection refractive refractive index resistance rotation shunts solar spectrum solid substance suppose surface telescope temperature theory of heat tion tube ultra-red vapour velocity vibrations vis viva viva volume wave wave-length wires zinc
Popular passages
Page 522 - Nevertheless, it is necessary to remember that there is a wider Teleology which is not touched by the doctrine of Evolution, but is actually based upon the fundamental proposition of Evolution. That proposition is, that the whole world, living and not living, is the result of the mutual interaction according to definite laws of the forces possessed by the molecules, of which the primitive nebulosity of the universe was composed.
Page 496 - The Orbs Around Us; a Series of Familiar Essays on the Moon and Planets, Meteors and Comets, the Sun and Coloured Pairs of Suns. By RA Proctor, BA Second Edition, with Chart and 4 Diagrams. Crown 8vo. Js. 6d. Other Worlds than Ours; The Plurality of Worlds Studied under the Light ,of Recent Scientific Researches.
Page 100 - There is at present in the material world a universal tendency to the dissipation of mechanical energy. 2. Any restoration of mechanical energy, without more than an equivalent of dissipation, is impossible in inanimate material processes, and is probably never effected by means of organized matter either endowed with vegetable life or subjected to the will of an animated creature. 3. Within a finite period of time past, the earth must have been, and within a finite period of time to come. the earth...
Page 193 - RESEARCHES IN THE CALCULUS OF VARIATIONS, principally on the Theory of Discontinuous Solutions: an Essay to which the Adams' Prize was awarded in the University of Cambridge in 1871.
Page 333 - ... that the ratio of the circumference to the diameter of a circle is correctly expressed by the number 314159 . . . (p.
Page 467 - It is impossible for a self-acting machine, unaided by any external agency, to convey heat from one body to another at a higher temperature ; or heat cannot of itself (that is, without compensation) pass from a colder to a warmer body.
Page 419 - The last two results, so far as known to me, are novel. To produce them, it is only necessary to cover Barry's flame with a moderately large tube, resting it loosely on the gauze. A luminous flame six to eight inches long is thus obtained, which is very sensitive, especially to high and sharp sounds. If now the gauze and tube be raised, the flame gradually shortens and appears less luminous, until at last it becomes violently agitated, and sings with a loud uniform tone, which may be maintained For...
Page 34 - ... still more recently Dr. Tyndall, examining the spectrum of the electric light through rock-salt, showed that the curve indicating the distribution "in the region of the dark rays beneath the red, shoots suddenly upward in a steep and massive peak, a kind of Matterhorn of heat, which quite dwarfs by its magnitude the portion of the diagram representing the visible radiation.