Gamma Radiation: High-Energy Rays From the Nucleus

Gamma radiation is pure energy released as high-frequency electromagnetic waves.
It often follows alpha or beta decay, as the nucleus sheds extra energy.
Unlike particles, gamma rays have no mass and no electric charge.
They are the most penetrating form of nuclear radiation.
Thick lead or concrete shields are needed to block gamma rays.
In medicine, gamma rays help both image the body and treat cancer.
Astronomers detect gamma rays from cosmic events like supernovae and black holes.
Gamma radiation can alter DNA, making it both useful and dangerous.
Controlled gamma sources sterilize medical equipment and food supplies.
Its discovery in 1900 revealed another dimension of nuclear energy.