Spectrum
Concept of Wave
Electromagnetic Waves
In electromagnetic waves, there is no need for the presence of any medium for the propagation of the wave. In other words, electromagnetic waves travel from one place to another in a vacuum and at the same speed. As in these waves, periodic changes take place in the magnetic fields; they are called electromagnetic waves.
Electromagnetic waves are formed by the combination of magnetic and electric fields. The light and the colour that you see are due to the presence of electromagnetic waves. Some of the important examples of electromagnetic waves are: Microwaves, Light waves, thermal radiation, X-rays, Radio waves and Ultraviolet waves.
What is the visible light spectrum? The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view. More simply, this range of wavelengths is called visible light. Typically, the human eye can detect wavelengths from 380 to 700 nanometers.