Where do electromagnetic waves come from?

Answer 1

A spectrum is a representation of the range of frequencies/wavelengths present in electromagnetic radiation. It may be plotted as the power or intensity on the vertical axis, and the wavelength or frequency on the horizontal axis.

When talking about the electromagnetic spectrum it is sometimes presented as a chart or table showing the range of frequencies/wavelengths that are covered by electromagnetic radiation. Thus it represents radiation from radio frequencies through infra red, visible light, ultraviolet light, x-rays and gamma radiation.

Where does it come from? The first link below shows the history of "spectrum" which was originally used to refer to the colours of light when split up by a rainbow or prism. It was later used by analogy to refer to "a range of objects". I guess that someone just wanted to make a chart showing how the various radiation types are related.

Answer 2

Anything with an electromagnetic field. Magnetism and electricity are two halves of the same coin, you can't have one without the other. From the Sun to your little hearing aid battery, there are lots of things that either absorb or emit electromagnetic fields.

Answer 3

it comes from like microwave oven anything that produces heat really

Answer 4

All the energy that we use around here comes from the sun, or came from the sun

a long time ago and was stored underground in the form of dead dinosaurs.

Answer 5

That "wave" is energy traveling from one place to another

carried by a moving set of electric and magnetic fields.

Answer 6

charged particles under acceleration.