| NOUN | artifact | Crookes radiometer | electromagnetic radiometer consisting of a small paddlewheel that rotates when placed in daylight |
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| Meaning | electromagnetic radiometer consisting of a small paddlewheel that rotates when placed in daylight. | |
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| Broader | radiometer | meter to detect and measure radiant energy (electromagnetic or acoustic) |
| Catalan | Radiòmetre de Crookes | |
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