Electromagnetic Spectrum :
→ The basic source of electromagnetic wave is accelerated charge. This produces the changing electric and magnetic field constitute and electromagnetic wave. An electromagnetic wave may be have its wavelength varying from zero to infinity all of them are not discovered. But some are known
The classification of electromagnetic waves according to frequency or wavelength is called ELECTROMAGNETIC SPECTRUM
electromagnetic spectrum
S.No. Type Wavelength Range Frequency Range
1 Radio waves >0.1m <3×109㎐
2 Micro waves 0.1m−1㎜ 3×109 to 3×1011㎐
3 Infrared 1㎜ to 7000A° 3×1011 to 4.3×1017㎐
4 Visible light 7000 to 4000A° 4.3×1014㎐ to 7.5to1014㎐
5 Ultraviolet 4000A° to 10A° 7.5×1017 to 3×1017㎐
6 X-Rays 10A° to 0.01A° 3×1017 to 3×1020㎐
7 Gamma Rays <0.01A° >3×1020㎐