Philosophical Magazine

absorption activity æther air-coal gas aluminium ampere angle anode approximately assumed atomic weight axis bullet calculated coefficient colour components cone constant corresponding curve deflexion density determined distance effect electric field electric wind emanation energy equal equation experimental experiments expression flame formula free electrons frequency gamma rays gases give given H₂ heat helium Hence hydrogen ionization ionization potential J. J. Thomson lines of force magnetic mass maximum mean measured mercury method millimetre molecules motion negative ions observed obtained orbit oxygen paper pendulum perihelion Phil plane plate Poisson's equation positive potential pressure quantities radiation radium Raoult's law rays recoil atoms relation shot shown solution spectrum surface temperature theory tube V₁ vapour vector velocity vessel vibrations volts wave-length wire zero