Maxwell predicted the existence of electromagnetic wave.
Electromagnetic wave experimentally discovered by Hertz.
At the end of nineteenth century, visible, ultraviolet, infrared, X-rays and gamma rays had also been discovered. We now know that electromagnetic waves include (i) gamma rays (ii) X-rayts (iii) ultraviolet rays (iv) visible light (v) infrared (vi)microwaves (vii) radio waves
The orderly distribution of electromagnetic radiations according to their frequency (or wavelength) is called electromagnetic spectrum.
There is no sharp division between one kind of wave and the next. The classification is roughly based on how these waves are produced and/or detected.
- Radio Waves
- Microwaves
- Infrared Waves
- Visible Light
- Ultraviolet Rays
- X-rays
- Gamma rays
Tags:
Electromagnetic Spectrum