The Elements of Physics

action angle of incidence appears atmosphere attraction axis ball cause centre of gravity colours column conductor consequently considered convex lens crystal crystalline lens density diameter direction distance earth effect elastic force electricity electromotive force equal equilibrium exerted exist experiments fall fluid glass greater heat hence inches instance intensity inverted iron isochronism length lens less liquid luminous magnetic mass mercury metal mirror motion moving nature needle object observed ordinary ray orifice oscillation parallel particles passes pencil pendulum perpendicular phenomena plane poles portion position pressure prism produced propagated quantity reflected reflexion refraction remarkable resinous retina seen sensible shew shewn side simple pendulum solid sounding body space specific heat spectrum string substance suppose surface takes place temperature termed theory tion transmitted tricity tube vapour velocity vessel vibrations violet vitreous vitreous fluid wave weight zinc