CROOKES RADIOMETER DOUBLE Construction is same as above but having two bulbs with 2 sets of vane, when exposed to sunlight the vanes rotate in opposite directions....
A complete set comprising the following. 1 Copper calorimeter 75 x 50mm. 1 Wooden outer box with felt lining 100 x 75mm approx. 1 Sliding wooden cover for outer box. 1 Copper stirrer with loop to fit inside the copper ...
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