PhysicsChapter 11: Electromagnetic Waves
Gamma Rays
Introduction
Gamma rays are extremely high-frequency electromagnetic waves with very short wavelengths and high photon energies. They are commonly produced during changes in atomic nuclei and radioactive processes.
Definition
Properties
Gamma rays: are electromagnetic; travel at speed `c` in vacuum; have no electric charge; have high penetrating ability; * are ionising.
Applications
Gamma radiation can be used in controlled settings for: sterilising some medical equipment; treating some cancers; industrial inspection; scientific research.
Hazards
Because gamma rays are strongly penetrating and ionising, exposure can damage living tissue. Protection may involve: reducing exposure time; increasing distance; * suitable dense shielding.
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GAMMA
- Very high frequency