| | radio frequency; extremely low frequency, ELF; very low frequency, VLF; low frequency, LF; medium frequency, MF; high frequency, HF; very high frequency, VHF; ultrahigh frequency, UHF; superhigh frequency, SHF; extremely high frequency, EHF; actinic radiation, actinic ray; gamma radiation, gamma ray; infrared spectrum; light, visible light, visible radiation; line; microwave; microwave spectrum; radio spectrum, radio-frequency spectrum; ultraviolet spectrum; visible spectrum, color spectrum |