Dulong and Petit Apparatus

Consists of columns surrounded by a glass jacket closed by rubber bungs & fitted with inlet & outlet tubes for steam & cold water respectively.

The lower ends of the tubes are bent & are connected horizontally. The upper open ends of the vertical limbs are bent so as to be placed side by side against a silvered glass scale 0-12 cm figured every 2 cm. The whole apparatus is mounted on a wooden stand by means of spring clips. All the glass parts are easily removable, used in determination of coefficient of absolute expansion of mercury.