Philosophical Magazine

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Taylor & Francis, 1899
 

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Page 216 - The expression in the above form (i.) is so simple that it is •worth while to put it into words, thus : — " When a volatile substance is dissolved in a liquid the vapour-pressure of the liquid is altered in the ratio of the molecular fractional amount of solvent (Molenbruch) in the liquid to that in the vapour.
Page 69 - It is not improbable that the surface waves here investigated play an important part in earthquakes, and in the collision of elastic solids. Diverging in two dimensions only, they must acquire at a great distance from the source a continually increasing preponderance.
Page 563 - the atom as containing a large number of smaller bodies," which he calls "corpuscles," and these are equal to one another. "In the normal atom this assemblage of corpuscles forms a system which is electrically neutral.
Page 462 - IP, from millims (millimetres) down to tenths of a micron, covers the entire ranye of the microscope, and indeed travels somewhat beyond the grasp of that instrument, since the smallest interval at which two objects can be seen as two by the best immersion objectives supplemented by the best immersion condensers, and most carefully handled, is but little less than two tenths of a micron, which is the 127,000th of an inch ; whereas sub-section Cir extends twice as far, ie down to one tenth of a micron.
Page 238 - For this a gyrostatic vibrator, capable of originating from a single blow on itself a subsidential train of at least 200,000 waves of light, must be connected with the surrounding ether by springs, having sufficient resilience to store up in themselves the total energy thus radiated out. Taking now as gyrostat our electric doublet of vitreously electrified rigid hollow ring filled with fluid resinously electrified, consider what must be the nature of the elastic communication between it and a rigid...
Page 150 - ... the inner parts to a less value on the outer, than would correspond to a uniform distribution throughout the wire. From general reasoning it seems clear that if we think of a rapidly damped disturbance propagated into a wire from its boundary ; and if the alternations are slow enough to allow the currents to penetrate to the core, we should expect to find an axial concentration during the latter stages of the phenomenon. It may be of interest in this connexion to mention another case in which...
Page 546 - Ann. xli. p. 1Gb') have shown that the rate of escape of the negative electrification at low pressures is much diminished by magnetic force if the lines of magnetic force are at right angles to the lines of electric force. Let us consider what effect a magnetic force would have on the motion of a negatively electrified particle. Let the electric force be uniform and parallel to the axis of x, while the magnetic force is also uniform and parallel to the axis of z.
Page 219 - If the diaphragm bo lowered the field will darken, if it be raised the illumination will be increased. In general it is best to have the diaphragm so adjusted that the lens is quite feebly illuminated, though this is not true for photographic work. Let us now suppose that there is a globular mass of air in front of the lens of slightly greater optical density than the surrounding air (b).
Page 236 - Hence the time-integrals of the opposite electromotive forces on units of the equal vitreous and resinous electricities are each equal to AM. § 2. Substitute now for our metal wire an endless tube of non-conducting matter, vitreously electrified, and filled with an incompressible non-conducting fluid, electrified with an equal quantity, e, of resinous electricity. The fluid and the containing tube will experience equal and opposite tangential forces, of each of which the time-integral of the line-integral...
Page 556 - ... reduced to finding the number of drops per cub. centim. in this cloud. We can do this in the following way : — If we know the amount of the expansion we can calculate the amount of water deposited per cub. centim. of the cloud; this water is deposited as drops, and if the drops are of equal size, the number of drops per cub. centim. will be equal to the volume of water per cub. centim. divided by the volume of one of the drops. Hence, if we know the size of the drops, we can calculate the number....

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