Philosophical MagazineTaylor & Francis., 1916 - Physics |
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Common terms and phrases
20 volumes anatase angle apparatus approximately axis boundary bulb c.c. per second cadmium calculated carbon cathode cell coil collisions components constant Corbino effect corresponding crystal curve density determined diameter discharge disk distance electric force electrometer electromotive force electrons equation Eskdalemuir experimental experiments film formula function galvanometer given Hall effect heat hydrogen increase intensity ionization J. J. Thomson lattice light liquid logarithms magnetic field maximum measured mercury vapour metal method mirror mobility molecular molecules n₁ negative ion normal observed obtained oxygen atoms paper Phil plane plate polarization positive ions potential difference pressure prism quartz radiation radium radius ratio rays reflexion refractive refractive index resonance rutile shown solution spectra spectrograph spectrum surface Table temperature tetragonal theory thickness tube variation vector velocity vibration volts wave-length xenotime zero zircon
Popular passages
Page 186 - But notwithstanding this the work of the French writers seems to have remained very little known. It must have been unknown to O. Reynolds when in 1885 he traversed much the same ground f, adding, however, the important observation that the maximum reduced velocity occurs when the actual velocity coincides with that of sound under the conditions then prevailing. When the actual velocity at the orifice reaches this value, a further reduction of pressure in the recipient vessel does not influence the...
Page 499 - I took journey to Edinburgh, where, being most hospitably received by him, I lingered for a whole month. But as we held discourse concerning this change in the system of logarithms, he said that for a long time he had been sensible of the same thing, and had been anxious to accomplish it, but...
Page 6 - ... as the result of compressibility. But when the velocity U of the stream exceeds that of sound, the system of velocities in front of the obstacle expressed by our equations cannot be maintained, as they would be at once swept away down stream.
Page 190 - W/3ja, we recover (11). It should perhaps be noticed that it is only after the vibrations have been made stationary that the effect of the surrounding air can be properly represented by the condition of uniformity of pressure. To assume it generally would be tantamount to neglecting the inertia of the outside air. . The above calculation of X takes account only of the principal vibration. Other vibrations are possible corresponding to higher roots of (10), and if these occur appreciably, strict periodicity...
Page 194 - On the experimental side it would be of importance to examine, with more accuracy than has hitherto been attained, whether the asserted independence of the discharge of the pressure in the receiving vessel (supposed to be less than a certain fraction of that in the discharging vessel) is absolute, and if not to ascertain the precise law of .departure. To this end it would seem necessary to abandon the method followed by more recent workers in which compressed gas discharges into the open, and to...
Page 370 - Complete sets (in Numbers) may be obtained at the following prices :— The First Series, in 20 volumes, from 1838 to 1847. Price £} t 1.
Page 539 - Hanked on the west by later Tertiary volcanic rocks, the whole territory consists of a complex of gneisses and other foliated rocks, intruded upon by granites belonging to at least two different periods. From Fernao Vellosa Harbour to Mokambo Bay the junction of the sedimentary formations with the crystalline complex is a faulted one, and the volcanic rocks, now greatly dissected by erosion, are distributed on each side of the fault. The lavas are of post-Oligocene age, and are clearly the result...
Page 278 - The keynote of our work is the distinction we find it necessary to make between quantities, values, and variables, on the one hand, and between symbols and the quantities or variables they denote or values they represent, on the other.
Page 404 - ... in intensity are persistent. The following explanation of the effect, which is different from that suggested by White, occurred to ; me some time ago on theoretical grounds, and has ! since been confirmed by me experimentally. The effect depends on the fact (which is itself a consequence of theory) that when the pressure with which the bow is applied is less than a certain critical value proportionate to the rate of dissipation of energy from the string, the principal mode of vibration of the...
Page 499 - ... prepared, until he could construct tables more convenient, if other weighty matters and his frail health would permit him so to do. But he conceived that the change ought to be effected in this manner, that 0 should become the logarithm of unity, and 10,000,000,000 that of the whole sine ; which I could not but admit was by far the most convenient of all. So, rejecting those which I had already prepared, I commenced, under his encouraging counsel, to ponder seriously about the calculation of...