The London, Edinburgh and Dublin Philosophical Magazine and Journal of ScienceTaylor & Francis, 1911 - English periodicals |
Contents
| 1 | |
| 11 | |
| 26 | |
| 53 | |
| 62 | |
| 69 | |
| 79 | |
| 102 | |
| 411 | |
| 435 | |
| 446 | |
| 454 | |
| 465 | |
| 479 | |
| 499 | |
| 517 | |
| 112 | |
| 122 | |
| 130 | |
| 155 | |
| 161 | |
| 167 | |
| 173 | |
| 196 | |
| 218 | |
| 225 | |
| 246 | |
| 249 | |
| 261 | |
| 268 | |
| 296 | |
| 309 | |
| 319 | |
| 325 | |
| 342 | |
| 348 | |
| 367 | |
| 386 | |
| 392 | |
| 404 | |
| 532 | |
| 554 | |
| 567 | |
| 579 | |
| 585 | |
| 604 | |
| 611 | |
| 618 | |
| 626 | |
| 634 | |
| 641 | |
| 648 | |
| 659 | |
| 669 | |
| 689 | |
| 695 | |
| 711 | |
| 718 | |
| 733 | |
| 742 | |
| 753 | |
| 771 | |
| 778 | |
Other editions - View all
Common terms and phrases
absorption actinium æther aluminium angle apparatus approximately atomic weight axis beam bulb calculated carbon centimetres centre charge coefficient colour constant corresponding critical pressure curve cylinder deduced deflexion denote density determined diameter discharge disk displacement distance effect electric electrons electroscope energy equal equation experimental experiments field fluorescence formula function galvanometer gases given glass helium hydrogen increase intensity iodine ionization ions J. J. Thomson law of attraction light liquid magnetic mass mean measured mercury metal method molecular molecules motion negative nuclei observed obtained oxygen paper particles path difference Phil pitot plane plate positive Principle of Relativity produced quantities quartz radium ratio rays refraction scattering secondary radiation shown shows sparking potential specimen spectrum sphere substance surface Table temperature theory thickness thorium tube vapour velocity vibration volts wave-length wire zero
Popular passages
Page 608 - Law If a plane polarized beam of light is allowed to fall on a polarizer, the intensity of the transmitted beam is proportional to the square of the cosine of the angle between the plane of polarization of the incident light and the plane of polarization that would be required for total transmission of the beam. Malus...
Page 690 - ... each carrying a charge 2 e. This may be only a coincidence, but it is certainly suggestive in view of the expulsion of helium atoms carrying two unit charges from radioactive matter. The deductions from the theory so far considered are independent of the sign of the central charge, and it has not so far been found possible to obtain definite evidence to determine whether it be positive or negative.
Page 671 - This scattering is far more marked for the y9 than for the a. particle on account of the much smaller momentum and energy of the former particle. There seems to be no doubt that such swiftly moving particles pass through the atoms in their path, and that the deflexions observed are due to the strong electric field traversed within the atomic system. It has generally been supposed that the scattering of a pencil of a or...
Page 690 - It may be possible in this way to account for the, high velocity of expulsion of « particles without supposing that they are initially in rapid motion within the atom. Further consideration of the application of this theory to these and other questions will be reserved for a later paper, when the main deductions of the theory have been tested experimentally. Experiments in this direction are already in progress by Geiger and Marsden.
Page 682 - In their experiments on this subject, Geiger and Marsden gave the relative number of a particles diffusely reflected from thick layers of different metals, under similar conditions. The numbers obtained by them are given in the table below, where z represents the relative number of scattered particles, measured by the number of scintillations per minute on a zinc sulphide screen.
Page 204 - ... all that is known (or perhaps need be known) of the aether itself may be formulated as a scheme of differential equations defining the properties of a continuum in space, which it would be gratuitous to further explain by any complication of structure; though we can with great advantage employ our stock of ordinary dynamical concepts in describing the succession of different states thereby denned.
Page 199 - ... theory, so long as atoms are regarded as discrete particles moving in empty space. But as soon as we take the next step in physical development, that of ceasing to regard space as mere empty geometrical continuity, the atomic constitution of matter (each ultimate atom consisting of parts which are incapable of separate existence, as Lucretius held) is raised to a natural and necessary consequence of the new standpoint.
Page 679 - K is very large for an encounter of a 0 particle with an atom, the reduction of velocity on this formula is very small. Some very interesting cases of the theory arise in considering the changes of velocity and the distribution of scattered particles when the a. particle encounters a light atom, for example a hydrogen or helium atom. A discussion of these and similar cases is reserved until the question has been examined experimentally. § 5. Comparison of single and compound scatterimi.
Page 690 - This may be only a coincidence, but it is certainly suggestive in view of the expulsion of helium atoms carrying two unit charges from radioactive matter. The deductions from the theory so far considered are independent of the sign of the central charge, and it has not so far been found possible to obtain definite evidence to determine whether it be positive or negative. It may be possible to settle the question of sign by consideration of the difference of the laws of absorption of the...
Page 690 - ... particle should be far more marked with a positive than with a negative centre. If the central charge be positive, it is easily seen that a positively charged mass if released from the centre of a heavy atom, would acquire a great velocity in moving through the electric field. It may be possible in this way to account for the high velocity of expulsion of a particles without supposing that they are initially in rapid motion within the atom.