Definition
"Alpha radiation" is a type of particulate radiation consisting of alpha particles, which are essentially helium nuclei (two protons and two neutrons). Imagine tiny bullets being fired from a radioactive atom. These particles have a relatively large mass and a positive charge. Alpha particles are not very penetrating; they can be stopped by a sheet of paper or even your skin. However, they can be harmful if ingested or inhaled. Think of them as strong but easily blocked projectiles. ☢️