Model No:AEI-CRD-SH53
Similar to above in construction, but with one additional bulb mounted vertically above the first one giving a total of two bulbs with two independent sets of mica vanes. Both the vanes have black painted and bright sides configured opposite, so that their exposure to sunlight or sufficiently bright incandescent light source causes them to rotate in opposite directions.
The Crookes radiometer consists of a partial vacuum glass bulb containing a set of vanes with one reflective and one black side. When exposed to light, the vanes rotate. This rotation is a result of the transfer of momentum from the photons to the vanes, leading to a slight heating effect and creating a pressure difference between the reflective and black sides, causing the vanes to move.
