* Electromagnetic Radiation: Gamma rays are part of the electromagnetic spectrum, just like visible light, radio waves, and X-rays. They are distinguished by their extremely high energy and short wavelength.
* Photon: Gamma rays are quantized, meaning they exist as discrete packets of energy called photons. Photons are massless and travel at the speed of light.
* Origin: Gamma rays are typically produced in high-energy processes like nuclear decay, supernova explosions, and other celestial events.
* Interactions: Because of their high energy, gamma rays interact strongly with matter, leading to ionization and potential damage to cells. This is why they are harmful to living organisms in large doses.
In summary, a gamma ray is a high-energy, massless particle of light (photon) that is part of the electromagnetic spectrum.