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| physical object > natural object > particle > boson > carrier boson > photon > microwave > EHF band | 
| EHF band comparison table | ||||
| Subject | is a kind of | has frequency | has wavelength | has definition | 
|---|---|---|---|---|
| microwave | photon | inversely proportional to the wavelength | inversely proportional to its momentum | Radio radiation with wavelengths of about 10-4 to 1 meter, equal to 109 to 1013 hertz. | 
| EHF band | microwave | 30 to 300 GHz | 1 mm to 1 cm | 
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