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abscissas accurate adjust angle apparatus axis battery body calorimeter cell charge circuit coil computed conductor connected constant containing correction corresponding curve deflection density determined difference of potential direction distance divided electricity electromotive force equal equation error example experiment fall field flowing follows friction galvanometer give given heat indicated intensity known least length light lines of force liquid machine magnet magnetic field mass means measured mercury method motion move nearly necessary needle object observations obtained passing pendulum period physical placed platted poles position possible potential pressure probable produced proportional quantity radiation ratio reading relation represented resistance reversed scale side simple specific gravity squares straight surface suspended taken telescope temperature terminals tion tube turned unit values varied vertical vibration volume weight wire
Page 205 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Page 155 - Ampere, which is one-tenth of the unit of current of the CGS system of electromagnetic units and which is represented sufficiently well for practical use by the unvarying current which, when passed through a solution of nitrate of silver in water, in accordance with a certain specification, deposits silver at the rate of 0.001118 of a gramme per second.
Page 296 - Cr. 8vo. 2s. 6d. MOLLOY.— GLEANINGS IN SCIENCE : Popular Lectures on Scientific Subjects. By the Rev. GERALD MOLLOY, D.Sc., Rector of the Catholic University of Ireland. 8vo. 7s. 6d. NEWTON.— PRINCIPIA.