The London, Edinburgh and Dublin Philosophical Magazine and Journal of ScienceTaylor & Francis, 1919 - Physics |
Contents
| 17 | |
| 32 | |
| 55 | |
| 81 | |
| 90 | |
| 98 | |
| 113 | |
| 164 | |
| 463 | |
| 480 | |
| 489 | |
| 501 | |
| 528 | |
| 542 | |
| 568 | |
| 582 | |
| 173 | |
| 182 | |
| 201 | |
| 214 | |
| 231 | |
| 240 | |
| 256 | |
| 267 | |
| 289 | |
| 301 | |
| 317 | |
| 341 | |
| 349 | |
| 365 | |
| 381 | |
| 395 | |
| 402 | |
| 417 | |
| 433 | |
| 452 | |
| 597 | |
| 613 | |
| 633 | |
| 639 | |
| 647 | |
| 655 | |
| 661 | |
| 662 | |
| 669 | |
| 685 | |
| 696 | |
| 705 | |
| 713 | |
| 715 | |
| 732 | |
| 738 | |
| 748 | |
| 749 | |
Other editions - View all
Common terms and phrases
alpha particles amplitude angle aperture atomic axis Bessel function boundary calculated centimetres centre colour constant corresponding curve deflexion density determined diffraction disk displacement distance effect electric electrodes electrons electroscope energy equal equation film force formula frequency function gases give given Hence ignition increase invisible film J. J. Thomson layer Lecher length light limit lines liquid Lord Rayleigh luminosity magnetic means measured method molecular molecules motion negative normal observed obtained oscillations p₁ paper particles Phil plane plate positive possible pressure probability radiation radius rate of solution ratio represent resonance shown sin² solution spectrum steady sparking potential supposed surface surface energy Table temperature theory tube vector velocity vibrations volts wave-length waves wire Young-Helmholtz theory
Popular passages
Page 333 - ... and measuring the gases, using the apparatus described above. A comparison of the results obtained by the different methods is given in Table 4. The area of the surface of the bubble was calculated from the measurements of its length when at rest and in motion and the known internal diameter of the tube. The volume of the bubble was 15 cc Its length when in motion was Itr04 cm., and when at rest 13"30 cm.
Page 710 - OY the focus is at r cos (q> — 26'), r sin (y — 26'), or r, 6.20' ; so that to a first-order approximation, whatever the fields, so long as the position of the diaphragm is fixed, the foci will all lie on the straight line ZF drawn through Z parallel to OX. For purposes of construction G the image of Z in OY is a convenient reference point, <p being here equal to 40'.
Page 187 - Density is the logarithm of the opacity, and since, in a theoretically perfect negative, opacities are directly proportional to the intensities of the light which produced them, it follows that each density must be proportional to the logarithm of the light intensity which produced it...
Page 745 - Kiver, is a series of Eocene estuarine shales, clays, and marls, with septarian nodules and pieces of coal and resin, and a rich fauna consisting principally of mollusca, but including fragmentary remains of whales, birds, fishes, and turtles.
Page 709 - A group of these rays is now selected by means of the stop or diaphragm D, and allowed to pass between the parallel poles of a magnet. For simplicity the poles are taken as circular, the field between them uniform and of such sign as to bend the rays in the opposite direction to the foregoing electric field. If...
Page 38 - ... which obtains on the average in the interior. The inwardly directed attractive force along the normal to the surface will orientate the molecules there. The surface film must therefore have a characteristic molecular architecture, and the condition of minimal potential involves two terms, one relating to the variation in density, the other to the orientation of the fields of force...
Page 709 - VW when the velocity varies in a group of rays of given e/m. In order to illustrate in the simplest possible way how this relation may be used to obtain...
Page 709 - If 8 and <t> be the angles * (taken algebraically) through which the selected beam of rays is bent by passing through fields of strength X and H, then...
Page 745 - Eocene estuarine shales, clays, and marls, with septarian nodules and pieces of coal and resin, and a rich fauna consisting principally of mollusca, but including fragmentary remains of whales, birds, fishes, and turtles. A thick series of sandstones, mudstones, shales, and seams of brown coal forms a large portion of the basin of the Niger, west of the Udi plateau. These rocks appear to be of lacustrine origin, and are probably Eocene. They contain numerous remains of undetermined plants, largely...
Page 622 - that the action of surfaces might ultimately be found to depend on the fact that they formed a support for layers of electrified gas in which chemical changes proceed with high velocity."* Moreover, in 1914, Dr.