Shaik on Instagram: "Explanation The electromagnetic (EM) spectrum is the entire range of all types of electromagnetic radiation. Radiation is energy that travels and spreads out as it goes-the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation. All electromagnetic waves travel at the speed of light in a vacuum (c lapprox 3 \times 10^8 (text{ m/s}). They are characterized by their wavelength (lambda) an