beta rays definition

  • others:
    • a type of ionizing radiation emitted by radioactive substances (such as for instance radium), even more penetrating than alpha rays, and consisting of negatively charged electrons. The electrons are identical particular particle as those of cathode rays, but have higher velocities (about 35,000 to 180,000 kilometers per second). They are easily deflected by a magnetic or electric industry.
    • See ray.
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