Physical ReviewAmerican Physical Society, 1908 Volumes for 1903- include Proceedings of the American Physical Society. |
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absorption alternating current amperes analogy angle anode anthracene apparatus bands calorimeter capacity carbon cathode cell cent change of resistance circuit coefficient coil computed condenser constant copper core corresponding curves decrease density determined diameter discharge distance effect electrodes electromotive force energy equation excitation experiments film flame fluid body fluidity fluorescence formula frequency fundamental fluid galvanometer given gives heat hydrogen peroxide increase index of refraction inductance inner cylinder intensity ionization ions joules light liquid magnetic field maximum measured metal method minutes molal negative nitrate observed obtained ohms paper phase phosphorescence Physical Society plate platinum plotted positive potassium nitrate potential temperature prism radiation radium rays reflection refraction salts secondary selenium shown Sidot blende solution Specific Conductance spectrum substances surface TABLE thickness tion tube velocity viscosity voltage volts volume wave-length wire xylol zero
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Página 307 - ... symbol of a bond) proceeds; a divalent atom is at the end of two such lines, a trivalent atom at the end of three, and so on ; and that when the chemical compound is represented by a graphic formula in this way, each atom must be at the end of the proper number of the lines which represent the bonds. Now, on the electrical view of chemical combination, a univalent atom has one unit charge, if we take as our unit of charge the charge on the corpuscle ; the atom is therefore the beginning or end...
Página 61 - s measurement of indices of refraction by the interferometer method,* etc., all seem to justify the assumption of the analogy above referred to and its use in extending our knowledge of optics as well as in the study of electric waves. The following experiments, upon which work has been in progress for the past two and one-half years, and their discussion are in line with this assumption, and, as will be seen by the description of the apparatus, ingenious devises, used here in more or less modified...
Página 81 - Af are the amplitudes of the respective components of the incident ray and t and r are the angles of incidence and refraction. i and r are connected by the relation, sin i = n sin r, n being the index of refraction between the two media which, in this discussion, is taken so that its value is greater than 1. If i and r are sufficiently small angles their sines may be replaced by nr and r and their cosines by 1. Making these changes in the formula gives *-- 4» and n— 1 the values of the amplitudes...
Página 538 - Duddell singing arc; abstract of a paper presented at the Washington meeting of the Physical Society, April 26-27, 19°9.
Página 514 - Abstract of a paper presented at the New York meeting of the American Physical Society and the A.
Página 515 - ... customary to test materials by various static and dynamic tests and to judge from the strength and ductility whether the quality of the material is sufficiently high to warrant its use regardless of the design of the part, its relationship to other parts, or possible defects due to faulty workmanship. One of the objects of the present paper is to show that, in case the material is to be used in the notched condition, the usual tests are unable to differentiate clearly between materials that will...
Página 499 - ... the ratio of the intensity of the reflected ray to that of the incident ray varies inversely as the fourth power of the wave-length.
Página 79 - The results of these experiments may be briefly summarized as follows : 1 . The...
Página 180 - Po or s = cp log 0 + const. (5) This gives us the relation sought between potential temperature and entropy. Since cp is invariably a positive quantity, it follows at once that for any process the potential temperature varies...
Página 67 - Bi and Bv so mounted in a triangular frame that the space between them can be filled with oil and their distance apart adjusted to .05 mm. or less if desired. The upper ball was mounted on a spindle so that it could be turned to a freshly polished place without changing its position. The lower one was put in a cup, which in turn was fitted into the frame by means of threads of millimeter or half millimeter pitch, depending on the diameter of the cup. This cup also contains the oil or other dielectric...