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| cosmic radiation | |||
| cosmic rays | |||
| cosmic radiation Radiations consisting of atomic nuclei, especially protons, of very high energy that reach the earth from outer space. Some cosmic radiations are very energetic and are able to penetrate a mile or more into the Earth | |||
| Millikan's rays; ultra X-rays; penetrating radiation of the atmosphere | |||
| cosmic ray | |||
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radiazione cosmica : 6 phrases in 2 subjects |
| Astronomy | 5 |
| Measuring instruments | 1 |
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