Heat and Thermodynamics

3.2 Friction Methods for Determining J. Joule's Method

A sketch of Joule's apparatus is given in Fig. 3.1.

 

 

Fig. 3.1 Joule's Apparatus

 

Index of parts:

G is a wooden grating.

C, the calorimeter, is supported on G. A vertical section of the calorimeter is shown in Fig. 3.2. The calorimeter is divided into compartments by means of baffle plates fixed to the wall of the calorimeter. These are shown by white portions in Fig. 3.2. The baffle plates have spaces cut out in them which are just large enough to allow the rotating vanes to pass through. These vanes are shown by black portions in Fig. 3.2. P is the paddle to which the rotating vanes ...