Radiometer, blue base, 20cm
Radiometer, blue base, 20cm ~ Radiomètre, base bleue, 20cm ~ Radiometro, base blu, 20cm ~ Strahlungsmesser, blauer Sockel, 20cm ~ Radiometro, azul, base, 20cm ~ Radiometer, blue base, 20cm
- Product Code: 7688
- Catalogue Page: 37
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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.
| Attribute | |
| Brand | Nauticalia |
| Dimensions | 20cm |
