radio 3 30 in the ELF band used by pipeline inspection gauges radio 30 300 in the SLF band used by submarine communication systems radio 300 3000 in the ULF band used by mine cave communication systems radio 3000 30000 in the VLF band used by government time stations and navigation systems radio 30000 300000 in the LF band used by AM broadcasts, government time stations, navigation systems, and weather alert systems radio 300000 3000000 in the MF band used by AM broadcasts, navigation systems, and ship-to-shore communication systems radio 3000000 30000000 in the HF band used by international shortwave broadcasts, aviation systems, government time stations, weather stations, and amateur radio radio 30000000 300000000 in the VHF band used by FM broadcasts, televisions, amateur radio, marine communication systems, and air traffic control radio 300000000 3000000000 in the UHF band used by televisions, cordless phones, cell phones, pagers, walkie-talkies, and satellites radio 3000000000 30000000000 in the SHF band used by microwave ovens, wireless LANs, cell phones, and satellites radio 30000000000 300000000000 in the EHF band used by radio telescopes, security screening systems, and point-to-point high-bandwidth devices radio 300000000000 3000000000000 in the THF band used by satellites and radio telescopes infrared 3000000000000 400000000000000 . Infrared light is found in sunlight and has a variety of industrial, commercial, scientific and household uses visible light 400000000000000 480000000000000 corresponding to the color red visible light 480000000000000 505000000000000 corresponding to the color orange visible light 505000000000000 525000000000000 corresponding to the color yellow visible light 525000000000000 575000000000000 corresponding to the color green visible light 575000000000000 610000000000000 corresponding to the color cyan visible light 610000000000000 668000000000000 corresponding to the color blue visible light 668000000000000 715000000000000 corresponding to the color indigo visible light 715000000000000 800000000000000 corresponding to the color violet ultraviolet 749500000000000 30000000000000000 . UV light is found in sunlight and is emitted by electric arcs and specialized lights such as mercury lamps and black lights x-ray 30000000000000000 30000000000000000000 . X-rays are used for various medical and industrial uses such as radiographs and CT scans gamma 30000000000000000000 3000000000000000000000000 . Gamma rays can be used to treat cancer and for diagnostic purposes