Lessons in Elementary Physics

absorbed angle atmosphere attraction ball bismuth body bulb carbonic acid centimetre centre conductor convex lens copper cubic cubic centimetre decimetre denote density direction distance double earth electricity energy of position equal expansion experiment fact fall fluid focus force of gravity friction gases glass grammes hence increase instance kilogramme latent heat law of motion length lens let us suppose liquid luminous magnet manner mass means mercury metal metres per second millimetres mirror moving needle oscillation particles pass pendulum perpendicular piston plane plate pole pressure prism produced proportional quantity radiation ray of light reflexion refraction represent resistance rest seen side solid sound specific gravity specific heat spectrum square square centimetre steam stone string substance surface temperature thermometer tube unit upwards vapour various velocity velocity of sound vertical vessel vibration volume wave wave-length weight whole zinc