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Eisco Crookes Radiometer - Round Plastic Moulded Base - Glass Bulb 70mm Diameter

Order Code:  

52-3332

Brand: Eisco MPN: PH0418A
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Qty Unit Price (Ex VAT)
1+ £7.28

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Additional quantity lead time 4 months
20 in Stock, despatched same dayAdditional 30 due on 27/11/2019

This radiometer consists of a partly evacuated glass bulb approximately 70mm in diameter, containing a fine pivot which supports four light weight metal arms. One side of each vane is blackened, the reverse side is bright.

On exposure to sunlight, or a sufficiently bright incandescent light source, the vanes turn. The absorption of radiant energy by the blackened side of the vanes sets up a temperature differential with respect to the bright sides, causing net force to be exerted by the air molecules on the blackened side which makes the vanes rotate with their bright faces leading.


  • Approx. 70mm diameter
  • Mounted on round plastic moulded base
  • Eisco type PH0418A

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