The thicker the substance, the more the radiation is absorbed. Alpha, beta and gamma radiations penetrate materials in different ways. Alpha radiation is the least penetrating. It can be stopped ...

The change that an unstable nucleus undergoes is called disintegration or decay. When unstable nuclei disintegrate or decay, certain particles - alpha or beta particles - or bundles of energy called ...

Alpha and beta radiation are not strong enough to penetrate solid material, but the high energy and high-frequency wavelength of gamma waves radiate through material in the beam's path. When a gamma ...

The effect of different types of radiation on tissue varies. Some radiations (alpha particles) are more ionising than others (beta and gamma). This is quantified by using a radiation weighting ...

There are radioactive gases in the air we breathe. Our own bodies - muscles, bones, and tissue - contain naturally occurring radioactive elements. Man has always been exposed to natural radiation ...

In this diagram of G-protein-coupled receptor activation, the alpha, beta, and gamma subunits are shown with distinct relationships to the plasma membrane. After exchange of GDP with GTP on the ...