explain the process of radiation in detail
Answers
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Answer:
- In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium.This includes:
- electromagnetic radiation, such as radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma radiation (γ)
- particle radiation, such as alpha radiation (α), beta radiation (β), and neutron radiation (particles of non-zero rest energy)
- acoustic radiation, such as ultrasound, sound, and seismic waves (dependent on a physical transmission medium)
- gravitational radiation, radiation that takes the form of gravitational waves, or ripples in the curvature of spacetime.
- Radiation is often categorized as either ionizing or non-ionizing depending on the energy of the radiated particles. Ionizing radiation carries more than 10 eV, which is enough to ionize atoms and molecules, and break chemical bonds. This is an important distinction due to the large difference in harmfulness to living organisms. A common source of ionizing radiation is radioactive materials that emit α, β, or γ radiation, consisting of helium nuclei, electrons or positrons, and photons, respectively. Other sources include X-rays from medical radiography examinations and muons, mesons, positrons, neutrons and other particles that constitute the secondary cosmic rays that are produced after primary cosmic rays interact with Earth's atmosphere.
- Gamma rays, X-rays and the higher energy range of ultraviolet light constitute the ionizing part of the electromagnetic spectrum. The word "ionize" refers to the breaking of one or more electrons away from an atom, an action that requires the relatively high energies that these electromagnetic waves supply.
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Answer:
Radiation is the emission and propagation of energy in the form of waves, rays or particles. There are three main types of radiation:
Non-ionizing radiation: This is the release of energy from the lower-energy region of the electromagnetic spectrum. This includes light, radio, microwaves, infrared (heat), and ultraviolet light.
Ionizing radiation: This is radiation with sufficient energy to remove an electron from an atomic orbital, forming an ion. Ionizing radiation includes x-ray, gamma rays, alpha particles, and beta particles.
Neutrons: Neutrons are particles found in the atomic nucleus. When they break off the nucleus, they have energy and act as radiation.
Examples of Radiation
Radiation includes emanation of any portion of the electromagnetic spectrum, plus it includes the release of particles. Examples include:
A burning candle emits radiation in the form of heat and light.
The Sun emits radiation in the form of light, heat, and particles.
Uranium-238 decaying into Thorium-234 emits radiation in the form of alpha particles.
Electrons dropping from one energy state to a lower state emit radiation
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