Radiation is energy that is emitted from a source and is radiated or transmitted in the form of rays, waves, or particles. Radiation travels through space and has the potential to penetrate different materials.

Ionizing Versus Nonionizing Radiation

Electromagnetic radiation can be described by either its frequency f, its wavelength λ, or its photon energy E. Wavelength is the distance between successive peaks or troughs of a wave and is inversely proportional to frequency. The higher end of the electromagnetic spectrum has very short frequencies on the scale of the size of atoms, and this end of the electromagnetic spectrum has the highest energy, while longer frequencies have lower energies.

There are two distinct types of radiation, nonionizing radiation, which is the type of radiation emitted by light ...

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