Acoustics, Light, and Heat

angle angle of incidence aperture appears atmosphere axis ball beam body boiling point called carbon carbonic acid centre colours condensation convex convex lens crystal dark density direction disc distance effect elasticity electric energy ether ethereal waves evaporation example expansion experiment fall Fcap feet flame freezing gases give glass glottis hence Illustrated incident index of refraction instrument intensity latent heat length lens lines liquid luminous mercury metallic mirror motion move musical sound object observed obtained opposite optic optic axis ordinary parallel particles passes pipe plane plate polarised polarization position pressure principal focus prism produced quantity radiation rarefaction reflected reflector reflexion refraction retina rise rotation screen seen solar solid specific heat spectrum steam string substance surface takes place telescope temperature thermometer tion tones tourmaline tube vapour velocity of sound vessel vibration waves whilst