Are all electromagnetic waves light?

https://upload.wikimedia.org/wikipedia/commons/f/f1/EM_spectrum.svg Visible light refer to electromagnetic waves whose frequency lies within a particular range ([math]400nm \leq\lambda\leq 700nm[/math]). Not all electromagnetic waves are light. read more

The electromagnetic spectrum is comprised of all the varieties of radiation in the universe. Gamma rays have the highest frequency, whereas radio waves have the lowest. Visible light is approximately in the middle of the spectrum, and comprises a very small fraction of the overall spectrum. read more

Light waves and other types of energy that radiate (travel out) from where they're produced are called electromagnetic radiation. Together, they make up what's known as the electromagnetic spectrum. Our eyes can see only a limited part of the electromagnetic spectrum—the colorful rainbow we see on sunny-rainy days, which is an incredibly tiny part of all the electromagnetic radiation that zaps through our world. read more