Electromagnetic radiation ranging in wave length just beyond violet in the visible spectrum of light. The human eye cannot detect u. V. Our sun is the major source of u. V. ...
The emission of alpha or beta particles or gamma rays from radioisotopes. These emitted particles can dislodge one or more electrons from atoms they strike. The free electrons can ...
1. A violently rotating column of air, in contact with the ground, either pendant from a cumuliform cloud or underneath a cumuliform cloud, and often ...
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