Frequency SPECTRUM 0 Hertz Steady direct current 50-60 Hetz (5000Km) AC power ---------------------USA--------------------------- 16-16.000 kHz Audio frequencies 10-30 kHz 30-10Km v.l.f -very low frequency 30-30000 KHz Radio Frequencies 30-300 kHz 10-1Km l.f. low frequency 30-35 kHz Marine com & navigation, aero nav. 300-3000 kHz 1000-100m m.f medium frequencies 535-1635 kHz AM broadcast bands 1800-2000 kHz 160 meter band ------------------Football_Field--------------------------- 3-30 MHz 100-10m h.f. - high frequencies 3.5-4 MHz 80 me1erband 7-7.3 MHz 40 band 14-14.35 MHz 20 meter band 21-21.45 MHz 15meterbend 26.85-27.54 MHz Industrial, Scientific, medical 28-29.7 MHz 10 meterband 26.86-27.455 MHz Citizens Band Class D -------------------Human----------------------------------- 30-300 MHz 1O-1m very high frequencies 44-49 Mhz Analog cordless phone 30-50 MHz Police,fire,highway,railroad 50-54 MHz 6 meter band 54-72 MHz TV channels 2 to 4 72-76 MHz Government, Aero,Marker 75MHz 76-88 MHz TV channels 5 and 6 88-108 MHz FM broadcast band 108-118 MHz Aeronautical navigation 118-136 MHz Civil Communication Band 148-174 MHz Government 144-148 MHz 2 meter band 174-216 MHz TV channels 7 to 13 216-470 MHz Amateur, government. CB Bend non-gov ,fixed or mobile ,aero navigate 220-225 MHz Amateur band. 1-1/4 meter 225-400 MHz Military 420-450 MHZ Amateur band, 0.7 meter 462.5-465 MHz Citizens Band ------------------Book----------------------------------- 300-3000 MHz 1OO-1Ocm u.h.f. - ultra high frequencies 470-890 MHz TV channels 14 to 83 890-3000 MHz Aero nav, amateur, Gov,fixed,mobile 800 MHz RF wireless modems 806-890 MHz Cellular Phones 900 MHz digital cordless phones 900-929 Mhz Personal Communication services (PCS) 929-932 Mhz Nation wide pagers 932-940 MHz two-way pagers 1.61-1.6263 GHz Satellite phones uplink 1.85-2.20 GHz Future PCS 2.4835-2.50 GHz Satellite phones downink 1.30-1.60 GHz Radar band ------------------Apple----------------------------------- 3.0-30.00 GHz 10-1cm s.h.f. - super high frequencies Government and non-govetnment, amateur bands, radio navigation 4-6 Ghz Satellite TV large dish 11.7-12.7 Ghz Satellite TV small dish 28-29 GHz Wireless "cable" TV ------------------Grain_OF_SAND------------------------------- 30.0-300 GHz 1000-100um Extra-high frequencies (weather radar, experimental, government) ------------------Bacterium------------------------------- 30-0.7um Infrared light and heat 300 TeraHz 0.76-0.4um Visiblelight 6470-7000A Red light 5850-6740A Orange light 5750 5850A Yellow light 5560-5750A Maximum visibility 4912-5560A Green light 4240-4912A Blue light 4000-4240A Violet light ------------------Virus------------------------------- 30 petaHz 3900-32A Ultraviolet light 3200-1A X-rays 1-0.06 A Gamma rays ------------------Atom--------------------------------------- 0.0005 Angs Cosmic rays ------------------Atomic_Nucleus------------------------------- 1um= micrometer(10^-6m) GHz- gigahertz(10^9 Hz) 1 angstrom = 10^-10 meters