Units Emission
Wavelength
Frequency
Energy
Temperature °K
 

Indicative bands of the electro­magnetic spectrum

 

BAND WAVELENGTH FREQUENCY
     
LF  low frequency 10000m - 1000m 30-300 kHz
MF medium frequency 1000m - 100m 300-3000 kHz
HF high frequency (SW) 100m - 10m 3-30 MHz
Radio - TV    
     FM 2.5-3.5 m 87-108 MHz
VHF-UHF-SAT 20 cm - 2.5 m 120 MHz - 1.5 GHz
Microwave 0.01-20 cm 1.5-3000 GHz
SAT 1.5-300 GHz
   
EHF extremely high frequency   30-300 GHz
Far Infrared 20,000-100,000 nm 3000 -15000 GHz
Near Infrared 700-20,000 nm 15000 - 430,000 GHz
Visible 400-700 nm 430,000 -750,000 GHz
Red 620-760 nm
Orange 570-620 nm
Yellow 550-570 nm
Green 470-550 nm
Blue 440-470 nm
Violet 380-440 nm
Ultraviolet 4-400 nm
Soft XRay 1-20 nm
Hard XRay 0.1-1 nm
Gamma Ray

 


  • The peak sensitivity of the dark adapted eye is 500-510 nm. 

  • c = frequency × wavelength (c=2,997924 ×108 m/sec) 

1m =109 nm  |  1nm =10-9 m

Wavelength of visible light: 400 nm - 700 nm (or 4000 Ć - 7000 Ć ≈ 4 ×10-7 -  7 ×10-7 m )

Length unit Angstrom Ć = 0,1nm = 1×10-10 m  |   micron μ = 1×10−6 m

 

 

Where does the electro­magnetic spectrum end?

Look at the full electro­magnetic spectrum

 

 

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