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$8

Radiometer

Posted about 1 month ago in Crestview, FL

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Sold by

Paul Quintanilla

Paul Quintanilla

Joined Jan 2026

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Radiometer

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Description

The Crookes radiometer. Black vanes absorb light, heat up, then smack into air molecules behind ’em. The other side—the silver—stays cooler, so the molecules bounce back slower. Net push, vanes spin. Works best in low pressure. Cool little toy.

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Details

Condition

Used (normal wear)

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