| 1. Roentgen [ Synonyms: r] | |
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A unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
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اشعاع کی پيمائش کی بين الاقوامی طور پرمستعمل اکائی۔ |
| 2. Roentgen [ Synonyms: rontgen, wilhelm konrad roentgen, wilhelm konrad rontgen] | |
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German physicist who discovered x-rays and developed roentgenography (1845-1923)
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رانجن۔ |