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MyEstuff.com

Authentic Models SD005 Crooks Radiometer

$49.00

Authentic Models SD005 Crooks Radiometer

$49.00
Free Economy Shipping on most orders over $25.00 within the Continental U.S.

SKU:
781934-58238-0
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Product Description

  • Recreation of an 1873 invention by the chemist Sir William Crookes
  • Veins inside the airtight glass move when exposed to sunlight
  • Dimensions: 9 in. tall & 4 in. diameter

The Crookes Radiometer is a unique ornament taking its name from the chemist, Sir William Crookes, who invented the device in 1873, the Crookes Radiometer consists of a vacuum in an airtight, clear glass bulb enclosing four delicate metal vanes. They are dark on one side, light on the other and mounted on a fine spindle. These radiometer vanes are highly responsive to light, spinning at several thousand rotations per minute when exposed to bright sunlight.

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