Page 11 - Professorial Lecture - Prof Oyedele
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Figure 2.4(a): Penetrating abilities of alpha particle (α), beta particle ( )
and gamma ray ( ).
Figure 2.4(b): Relative penetrating powers of alpha particle (α), beta
particle ( ) and gamma ray ( ) in a human body.
Substances which emit gamma radiation could be hazardous inside or
outside the body. Beta particles would be most harmful inside the body
while the substances that emit only alpha particles could only be hazardous
if swallowed or inhaled.
