Question

what is a radiation?

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Answer 1

Answer:

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.

Answer 2

Answer:

Radiation are powerful and very dangerous rays that are sent out from certain substances.

for example :-

sun's radiation ( UV rays ) are very harmful for living beings.