Describe how electromagnetic waves are formed and travel through space?

Question: Describe how electromagnetic waves are formed and travel through space?

Electromagnetic waves are formed by the vibrations of electric and magnetic fields that are perpendicular to each other. These fields can be generated by moving electric charges or changing magnetic flux. Electromagnetic waves can travel through different media, such as air, water, or vacuum, as well as through the interaction of atoms in the medium. The speed of electromagnetic waves depends on the optical density of the medium, and is always less than the speed of light in vacuum, which is 3*10^8 m/s. Electromagnetic waves carry energy and momentum, and have different wavelengths and frequencies that form the electromagnetic spectrum.

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