| NOM | person | William Crookes | English chemist and physicist |
|---|
| Sentit | English chemist and physicist; discovered thallium; invented the radiometer and studied cathode rays (1832-1919). | |
|---|---|---|
| Espècimen de | físic | A scientist trained in physics |
| química, químic | A scientist who specializes in chemistry | |
| Anglès | Crookes, William Crookes, Sir William Crookes | |
| Espanyol | Sir William Crookes, William Crookes | |
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