Alpha beta gamma penetration
For example, alpha radiation travels only a few centimetres in air, beta radiation travels tens of centimetres in air and gamma radiation travels many metres.
The penetrating power of alpha rays, beta rays, and gamma rays varies greatly. Alpha particles can be blocked by a few pieces of paper. Beta particles pass.
Radioactive decay
Description:Penetration of Alpha Particles Alpha particles can be absorbed by a thin sheet of paper or by a few centimetres of air. Alpha particles have the weak penetrating ability; a couple of inches of air or a few sheets of paper can effectively block them. Radiation with sufficiently high energy can ionize atoms; that is to say it can knock electrons off atoms, creating ions. The alpha particles are heaviest particles and are produced during decay of some heaviest elements. Other forms of radiation such as radio waves, microwaves, and light waves are called non-ionizing.
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