Fénymalom light-powered rotating vacuum glass radiometer by Crookes, 20 cm high

Nettó ára: 47.1 €
Bruttó ára: 59.81 €

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Details

Royal

On a spectacular ledge, in a shop window, in a meeting room.
Dimensions: 9x9x20 cm
Weight: 130g

More information:

Light mill

The sight of the blades turning around in the sunlight is very interesting, no external power source is needed.
The radiometer, also known as light mill, was invented by English physicist Sir William Crookes (1832-1919).
The the essence is that there is a vacuum in the glass dome, one side of the paddle wheels placed on a spike is shiny, the other is matte black, so it starts spinning under the influence of warm light.
It does not require batteries or an external power source.

Info

Vonalkód:

00000505

EAN kód:

466698222151

MPN:

NS001898

Weight:

130 g/pcs

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