Memoir and Scientific Correspondence of the Late Sir George Gabriel Stokes, Bart. ...University Press, 1907 - 982 páginas |
Otras ediciones - Ver todas
Términos y frases comunes
actinometer anemometer angle apparatus axis barometer bore bulb calculation CAMBRIDGE candle centre coefficient colour constant correction cups curve cylinder DEAR SIR GEORGE density determined diffracted direction discharge distance disturbance EDWARD SABINE effect electric electrode equation error experiments fibre fluid fluorescence force G. G. STOKES give glass GLENLAIR gravity Haidinger's brushes harmonic heat herapathite inch Kater's pendulum knife-edges lamp-black LENSFIELD COTTAGE letter Leyden jar light log dec LORD RAYLEIGH magnetic mean measured mentioned metal Meteorological method mica molecules motion nearly negative observations obtained oscillation paper pendulum period Phil phosphorescence photographs plane plate position pressure prism probably Prof quartz radiation radiometer radium rays reflection refraction Royal Society seiches sensible spectra spectrum spherical aberration suppose surface swings temperature theory Trans tube uranium glass velocity velocity of propagation vibration viscosity wave-lengths waves wind
Pasajes populares
Página 296 - Account of the Operations of the Great Trigonometrical Survey of India 'J.
Página 75 - The coincidence in position of the bright and dark D is too striking to allow us to regard it as fortuitous. In conversation with Thomson I explained the connection of the dark and bright line by the analogy of a set of piano strings tuned to the same note, which, if struck, would give out that note, and also would be ready to sound it, to take it up, in fact, if it were sounded in air. This would imply absorption of the aerial vibrations, as otherwise there would be a creation of energy. Accordingly...
Página 234 - Ib. per square foot at a velocity of 21 miles per hour, or in other words, a pressure of 1 Ib. per square foot is caused by a wind of a little more than 17 miles per hour. The pressure upon the same area is increased by increasing the perimeter. The pressure upon a J ft. plate is proportionally less than that upon a plate either half or double its size.
Página 349 - Ryves ring," as I think it might be called ; but it was so conspicuous that it forced itself upon my attention. I felt rather than heard the explosion at the moment that it passed. We stationed ourselves as near as prudence would allow at a distance of 120 yards, so that only about one-third of a second elapsed between the detonation and the passage of the shadow ; but the precision of observation of coincidence when very rapid movement occurs is so great, that I am quite satisfied that the observation...
Página 51 - Hence the practical correctness of the equivalent got by Mayer's method must not lead us to shut our eyes to the merit of our own countryman Joule in being the first to determine the mechanical equivalent of heat by methods which are un-exceptionable, as fulfilling the essential condition that no ultimate change of state is produced in the matter operated upon.
Página 243 - It may be noticed, however, that the numbers are unusually large (and at the same time very decidedly systematic) in the case of the second cylinder of the first order, for which the average is as much as 0'125, the eighth of a degree.
Página 10 - Hera path's) theory is wrong*, and at any rate as I found myself able and willing to deduce the laws of motion of systems of particles acting on each other only by impact, I have done so as an exercise in mechanics. Now do you think there is any so complete a refutation of this theory of gases as would make it absurd to investigate it further so as to found arguments upon measurements of strictly "molecular" quantities before we know whether there be any molecules?
Página 10 - ... particles have not all the same velocity, but the velocities are distributed according to the same formula as the errors are distributed in the theory of least squares. If two sets of particles act on each other the mean vis viva of a particle will become the same for both, which implies, that equal volumes of gases at same press, and temp, have the same number of particles, that is, are chemical equivalents. This is one satisfactory result at least. I have been rather diffuse on gases but I...
Página 369 - ... and, after stopping the vessel, will oscillate backwards and forwards in decreasing arcs, presently setting in its old position relatively to space. It was suggested by Prof. Stokes that it would be desirable to register not merely the amplitude of the first swing, but the readings of the first five swings or so. This would afford a good value of the logarithmic decrement (the decrement per swing of the logarithm of the amplitude of the arcs), which is the constant most desirable to know. The...
Página 392 - By communicating an increase of motion to the molecules of the gasr which carry it to the thermometer. It is quite conceivable that a considerable part, especially in the case of heat of low refrangibility, may be transferred by