The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science

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Taylor & Francis, 1924 - English periodicals
 

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Page 1136 - Catalognos issnod, any of which will be sent gratis and post free on mentioning interests. That Book you do not want ! Foyles will buy it — A single volume to a library. Expert valuers sent any distance.
Page 643 - A is the cross-sectional area of the beam. / is the moment of inertia of the cross-section about the neutral axis (see Fig.
Page 507 - ... sources of radium active deposit ? Were they, in spite of all the observations previously made, real a-particles originating in the source material, also? Before long, Rutherford was beginning to think that they must be. In the course of a lecture to the Chemical Society in the spring of 1922 he said: 'While a large amount of experiment will be required to fix definitely the nature of the radiation, the general evidence indicates that it consists of particles of mass 4, which are projected from...
Page 16 - U the tube on the negative side first filled with gas :' gases combine in the proportion of two volumes of hydrogen to one of oxygen.
Page 732 - ... intensity. Faraday limited his use of lines of force to static fields, and in cases where the field was produced by a number of charged particles, to the resultant field. The electromagnetic theory of light, however, made it necessary to suppose that electric and magnetic lines of force in a wave front move with the velocity of light in a direction at right angles to their plane. Furthermore, the discovery of the electron made it natural to assume that when one of these small particles is in...
Page 135 - Published by permission of the Director of the Bureau of Standards of the US Department of Commerce.
Page 741 - ... two being observed together and called the Volta effect. Very little is known about this latter force except in the case of metals ; and in these it varies with temperature, and is small. In the case of non-metals it is often much larger than the chemical contact-force*. xv. The total contact-force at any junction can be experimentally determined by measuring the reversible energy developed or absorbed there per unit quantity of electricity conveyed across the junction (practical difficulties,...
Page 794 - The deformation may be accounted for in all cases by slip on the (11-) planes aud in the [111] direction, with the single exception of a crystal subject to special constraints which slipped as well on the (100) planes and in the [100] direction. The [111] direction represents the line of densest packing of atoms for this type of lattice structure — the body-centred — the [100] direction being next in order.
Page 730 - M . . . groups are (2), (2, 2, 4) , (2, 2, 4, 4, 6) ... respectively. The scheme is compared with that of Bohr. It enables all the essential features involved in Bohr's picture of atom-building to be retained, and so is equally in accord with general chemical and spectroscopic evidence ; but it differs in the distribution in the completed groups, and in indicating a somewhat simpler mode of development. Evidence based on considerations of intensities of X-ray...
Page 428 - ... found the electro-motive force from the water-pipes to the gas-pipes, and from either set of pipes to the lightningconductor. I have been making a mechanical model of an induction coil, in which the primary and secondary currents are represented by the motion of wheels, and in which I can symbolise all the effects of putting in more or less of the iron core, or more or less resistance and Leyden jars in either circuit.

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