Philosophical MagazineTaylor & Francis., 1918 - Physics |
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æther amperes amplitude angle approximately atomic weight axis Bessel Functions C₁ calculated carbon centre chemical circuit coefficients coil condenser constant corresponding coupling curve D.Sc deflexion density determined distance doublets effect electric electromagnetic electron element emission emitted energy equal equation experiments expression flame Fleet Street force formula frequency function furnace spectrum given integral intensity ionization Ionization Potentials iron vapour J. J. Thomson JOSEPH JOHN THOMSON L₁ length light magnetic magneto metal method molecules motion observed obtained OLIVER JOSEPH LODGE oscillations paper pendulum peneplain phase Phil Philosophical Magazine plane plate positive Poynting flux primary radiation ratio resonance selenium self-inductance ship signals solution sources spark spectra surface temperature term theory tube vanish velocity vibrations wave wave-length zero
Popular passages
Page xi - The apparatus, moreover, for sounding the signal often requires some time before it is in readiness to act. A fog often creeps imperceptibly...
Page 324 - ... law. This is an important step, for it affords an experimental proof that, at any rate to a first approximation, the ordinary law of force holds for electrified bodies at such exceedingly minute distances. It was also found that a resultant charge on the nucleus measured in fundamental units was about equal to the atomic number of the element. In the case of gold this number is believed from the work of Moseley to be 79. Knowing the mass of the impinging a-particle and of the atom with which...
Page 239 - ... (A) An atomic system possesses a number of states in which no emission of energy radiation takes place, even if the particles are in motion relative to each other, and such an emission is to be expected on ordinary electrodynamics. The states are denoted as "stationary" states of the system under consideration.
Page 426 - Quarterly lAst of Additions, post free. BOOKSELLING DEPARTMENT. Complete Stock of Recent Works and Text-Books in all Branches of Science and Technics. CLASSIFIED LIST (40 PAGES) OF SCIENTIFIC, TECHNICAL, AND INDUSTRIAL BOOKS, POST FREE ON REQUEST. Special facilities for execution of Orders from Abroad. Effectually protective packing used without charge.
Page 311 - ... approximately according to Bernoulli's law. On the other hand, if in order to effect the conversion of velocity into pressure more rapidly, the expansion be made too violently, the fluid refuses to follow the walls, eddies result, and mechanical energy is lost by fluid friction. According to W. Froude's generally accepted view, the explanation is to be sought in the loss of velocity near the walls in consequence of fluid friction, which is such that the fluid in question is unable to penetrate...
Page 60 - ... corresponding absorption line. Two types of inelastic encounter between electrons and gas atoms have been observed. One of these results in the emission of a radiation of a single frequency, without ionization of the gas, while the other ionizes the gas and causes it to emit a composite spectrum of radiations. The potential giving the first type of encounter may be termed a resonance potential, that giving the second type an ionization potential. The present paper is an account of an experimental...
Page xii - Under certain conditions of the atmosphere, when a fog signal is a combination of high and low notes, one of the notes may be inaudible. The mariner should not assume — a. That, because he fails to hear the sound, he is out of hearing distance. b. That, because he hears a fog signal faintly, he is at a great distance from it. c. That, because he hears the sound plainly, he is near it. d. That, because he does not hear it, even when in close proximity, the fog signal has ceased sounding. e. That...
Page 311 - that in the case of a homogeneous incompressible fluid, whenever udx + vdy + wdz is an exact differential, not only are the ordinary equations of fluid motion satisfied, but the equations obtained when friction is taken into account are satisfied likewise. It is only the equations of condition which belong to the boundaries of the fluid that are violated.
Page 144 - The Annals and Magazine of Natural History, including Zoology, Botany and Geology ; by Sir W.
Page 294 - STOICHIOMETRY. By SYDNEY YOUNG, D.Sc., FRS, Professor of Chemistry in the University of Dublin...