The unit of angle Radian is abbreviated rad.
A rad is also a unit of radiation dose.
1 rad = 0.01 Gray (Gy) = 1 c Gy = 0.01 joule of energy absorbed per kilogram of tissue.
The term "rad" is also used in slang as an adjective to describe something in positive sense.
- Radical: rad moves on a skateboard.
- Wonderful; marvelous.
- A sport akin to extreme walking in which the participant challenges himself to pull off pre-developed tricks without the use of a skateboard or any similar wheeled device; also used in the form of a verb: "Let's go out Radding!"
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Units of radiation dose