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| ionosphere A region of the earth's atmosphere, extending from about 60 to 1000 kilometers above the earth's surface, in which there is a high concentration of free electrons formed as a result of ionizing radiation entering the atmosphere from space | |||
| ionosphere | |||
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ionosphere : 27 a las frases, 5 temas |
| Ciencias de la vida | 10 |
| Ciencias naturales | 3 |
| Comunicaciones | 2 |
| Electrónica | 11 |
| Tecnología de la información | 1 |