Philosophical Magazine

actinium activity angle anode approximately atoms axis cęsium calculated carbon carbon monoxide cathode cent centimetre centre chemical chromosphere collision constant corresponding curve deflexion determined diameter discharge displacement distance effect electric electrons elements emission emitted energy equal equation experiments filament film force frequency fringe galvanometer gases given gives glow potential graphite grid heat helium hydrogen ignition increase infra-red fundamental intensity ionization potential ions J. J. Thomson light lines luminous vapour magnetic maximum measured mercury metal method mixture molecular molecules motion normal observed obtained ohms orbit oxygen Phil Phys plane plate positive potential difference pressure proportional quantity quantum radiation radium ratio relative resistance ring rotation Schist shown solution spark spectrum surface TABLE temperature theory thermal tube uranium velocity voltage volts ду