Glass Radiometer with Blue Base - 16cm

Curious and mesmerising radiometer
£24.95
Product Code:
3235757
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Standard delivery - With our standard delivery service we aim to deliver your item within 5 days, whilst asking you to allow up to 10 days as some items are despatched directly from our trusted specialist suppliers.
These curious and mesmerising instruments measure the power of electromagnetic radiation. Made from a glass bulb with much of the air removed to form a partial vacuum, inside is a set of fine metal vanes, each with one dark and one light side, mounted on a spindle. The vanes rotate, as if by magic, when exposed to sunlight, artificial light, or infrared radiation (even the heat of a hand nearby can be enough) – the more intense the light, the faster the rotation.

  • Measures the power of electromagnetic radiation
  • Fine metal vanes inside turn, as if by magic, when exposed to light or heat
  • Made of glass
  • Measures 16cm tall

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