What is another word for electromagnetic spectrum?
Pronunciation: [ɪlˌɛktɹə͡ʊmɐɡnˈɛtɪk spˈɛktɹəm] (IPA) 
The electromagnetic spectrum is a term used to describe the range of electromagnetic radiation that exists in the universe. It includes everything from radio waves and microwaves to visible light and X-rays. Synonyms for the electromagnetic spectrum include the EM spectrum, electromagnetic radiation spectrum, electromagnetic wave spectrum, and simply the radiation spectrum. Each of these terms describes the same range of radiation types, but with slightly different emphasis. Understanding the electromagnetic spectrum is critical for understanding everything from radio communication to medical imaging technologies like MRI and CT scans, which rely on different parts of the spectrum to function.
