The London, Edinburgh and Dublin Philosophical Magazine and Journal of ScienceTaylor & Francis, 1921 - Physics |
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Common terms and phrases
absorption alpha particle amplitude angle angular angular momentum anode apparatus atmosphere atomic number atomic weight aurora axis Balmer series beam C₁ calculated cathode centimetres circuit coefficient colour constant corresponding crystal curve determined Diffuse Arcs direction displacement distance effect electric rays electrons elements emission energy equation experimental experiments filament formula frequency give given height helium helium atom Hence hydrogen increase ionization ions isotopes J. J. Thomson length lens lines of force liquid luminosity luminosity distribution magnetic field means measured mercury method molecules motion negative normal nucleus observed obtained orbit oscillation paper particles Phil Phys plane plate pressure produced quantities radiation ratio reflexion refraction shown solenoid solution spectrum surface TABLE temperature theory tube values variation velocity vibration viscosity volts W. H. Bragg w₂² wave-length wire zero
Popular passages
Page 302 - However, it seems probable that the meteorites represent more accurately the average composition of material at the stage of evolution corresponding to the earth than does the very limited part of the earth's material to which we have access.
Page 818 - This implicitly assumes that positively charged bodies attract one another at the very small distances involved. Such attractive forces must exist in order to hold the ordinary composite nucleus in equilibrium, and it seems likely that these attractive forces will extend some distance from the nucleus.
Page 933 - X 10~13 cm., respectively, moving in the direction of its minor axis. On this view a hydrogen nucleus projected towards an a particle would move under the ordinary electrostatic forces governed by the inverse square law until it reached a spheroidal surface of the above dimensions. Here it would encounter an extremely powerful field of force and recoil as from a hard elastic body. The deductions made by Chadwick and Bieler are г= Chadwick and Bieler, PA«.
Page 841 - At this juncture the theory of relativity entered the arena. As a result of an analysis of the physical conceptions of time and space, it became evident that in reality there is not the least incompatibility between the principle of relativity and the law of propagation of light, and that by systematically holding fast to both these laws a logically rigid theory could be arrived at.
Page 511 - ON a former occasion 1 certain lines about a bar-magnet were described and defined (being those which are depicted to the eye by the use of iron filings sprinkled in the neighbourhood of the magnet), and were recommended as expressing accurately the nature, condition, direction, and amount of the force in any given region either within or outside of the bar. At that time the lines were considered in the abstract. Without departing from or unsettling anything then said, the inquiry is now entered...
Page 739 - A generous grant from the Rumford Fund of the American Academy of Arts and Sciences...
Page 165 - In conclusion, we desire to express our thanks to the Department of Scientific and Industrial Research for a grant which has enabled one of us to take part in these experiments.
Page 83 - The values of the l> constant have been calculated for each experiment, and are given in the last column of Tables I. and II.
Page 511 - It appears to me, that the outer forces at the poles can only have relation to each other by curved lines of force through the surrounding space; and I cannot conceive curved lines of force without the conditions of a physical existence in that intermediate space.
Page 862 - In a previous paper f it was suggested tentatively that, when combustion is gentle the intramolecular energy acquired by these molecules is concentrated in the rotational degrees of freedom and in such very low frequency vibrations as the molecules may be capable of executing, but as the combustion increases in vigour the higher frequency vibrations begin to share in this...