MS-188 PVG SMOKE CELL

For the observation of brownian movement in smoke particles.
The apparatus consist of a black wooden or plastic box with a
removable plastic lid. The box contains a smoke cell, a cylindrical
glass condensing lens and 12 V 3 W festoon bulb, fitted with two 4
mm. socket terminals for connection to 12 V supply. Lid has a small
aperature glazed with a micro cover glass which cover the smoke
cell. Cell is placed on the microscope stage and connected to 12 V
supply by terminals. Cell is filled with smoke and cover slip is used
to retain the smoke. Brownian motion will be observed at least
after 15 minutes.