Philosophical Magazine

according activity amount appears applied approximately arrangement assumed atoms bismuth calculated carbon cent centre charge chemical close collision compared complete conductivity considerable considered constant containing corresponding curve determined diameter direction discharge distance effect electric electrons elements energy equal equation experiments expression fact field force frequency function given gives glow greater heat helium Hence hydrogen increase indicate intensity ionization ions known less light lines mean measured mercury metals method molecular molecule motion nature normal observed obtained occur particles passing Phil plane plate positive possible potential present pressure probably produced proportional quantities radiation ratio rays relation relative represented resistance respectively rotation shown shows similar solution spectrum supposed surface Table taken temperature theory tube vapour velocity volts wires