Physical Review

absorption band acid afterglow alternating current anhydride apparatus bulb cadmium carbon cathode cell cent circuit Clark cell cobalt chloride coefficient coil color concentration condenser constant constantan containing copper curve damping decrease determined discharge distance duration effect electrical electrodes electromotive force equation error experiments film furnace galvanometer give glass glow heat hydrate increase inductance inhomogeneity intensity ionization ions iridium J. J. Thomson length liquid air magnetic maximum means measured mercurous sulphate mercury metal method molecule nitrate null point observed obtained oxide period phosphorescence PHYS PHYSICAL plate platinum potential pressure radiation ratio rays readings reflection refractive index resistance resonators rhodium salts slit solubility spark gap spectra spectrum substances sulphate surface Table temperature thermo-electric thermoelements thermometer thickness tion transmission tube vapor variation varied velocity vessel vibrator volts water of crystallization wave-length wire zinc