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| radio waves | |||
| radio (Electromagnetic waves longer than about 0.3 mm (frequencies lower than about 1 THz). Radio is used to transmit a wide variety of signals, using various frequency ranges and types of modulation, such as AM and FM broadcasts, microwave relays, and television broadcasts) | |||
| Radiowellen: 5 phrases in 3 subjects |
| Astronomy | 1 |
| Electronics | 2 |
| Marketing | 2 |