Radiation
A generic term that covers a number of subjects.

Electromagnetic Radiation
Consisting of electric and magnetic fields perpendicular to each other and the direction of travel. e.g. γ-rays, X-rays, ultraviolet, visible, infrared, microwaves and radio waves.

Radioactive Emission
The three types of radioactive emission are α particles, β particles and γ-rays.

See also: Geiger Counter, Gray, Radiation Absorbed Dose, Radiation Barrier, Roentgen, Secondary Radiation, Sievert.

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Subjects: Physics