How does electromagnetic radiation originate?

Answer 1

As it is a form of energy, it cannot be said to originate in any normal sense - energy is neither destroyed nor created. The other problem with your question is that because the electromagnetic spectrum covers all forms of radiated wave energy, there is no simple answer. As a very simple starting point, all forms of EMR can be generated as a result of a change in energy of matter. For instance, visible light, UV and other wavelengths can be emitted when an electron changes energy level in an atom or in a plasma, infrared can be emitted when an atom drops in temperature, X-rays can be emitted when high energy electrons are absorbed by a solid metal target,

Answer 2

Electromagnetic radiation originates from the movement of charged particles, such as electrons, that create oscillating electric and magnetic fields. When these fields propagate through space, they form waves of energy at various wavelengths, ranging from radio waves to gamma rays. This radiation can come from a wide range of sources, including the sun, lightbulbs, and electronic devices.