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| physical object > natural object > particle > boson > carrier boson > photon > radio > ULF band |
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| ULF band comparison table | ||||
| Subject | is a kind of | has frequency | has wavelength | has definition |
|---|---|---|---|---|
| radio | photon | 3 GHz or less | 10 cm or more | Electromagnetic radiation with the lowest energy and longest wavelength. Unlike visible light, radio waves penetrate dust and can be detected from throughout the Galaxy. |
| ULF band | radio | 30 Hz or less | 10000 km and higher |