What is Radiation ?? and is it useful ??
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Radiation is energy that comes from a source and travels through space at the speed of light
Radiation is often misunderstood, but helps to save lives and cure disease. Radiation is natural and found everywhere – it comes from outer space, the air we breathe, and the earth we tread. It's even in our bodies; naturally occurring radioactive elements in our bones irradiate us on average 5000 times per second.
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Radiation is energy that comes from a source and travels through space at the speed of light. This energy has an electric field and a magnetic field associated with it, and has wave-like properties. You could also call radiation “electromagnetic waves”.
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