Natural Philosophy for General Readers and Young Persons

absorbed acid action angle apparatus atmosphere atmospheric pressure attraction axis barometer battery body brass bulb called carbon carbonic acid centre of gravity colour column concave condensing conductor consists convex lens copper cylinder density diameter direction disc distance earth effects elastic force electricity electrified electroscope equal equilibrium expansion experiment fixed fluid focus galvanometer gases glass greater heat Hence horizontal hydrogen hydrometer immersed inches increases instrument insulated iron layer lens lenses lever Leyden jar light liquid luminous machine magnetic magnetised means mercury metal millimetres mirror molecules motion needle negative number of vibrations object observed oscillations passes pendulum pipe piston placed plane plate pole position pressure produced quantity rays reflected refraction represented in fig rises seen solid sound specific gravity steam stopcock substances sulphuric acid surface temperature thermometer tion traversed tricity tube velocity vertical vessel volume weight wire zinc