Radiation - Wikipedia
WebRadiation, in general, exists throughout nature, such as in light and sound. In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or a material medium. This includes:
Radiation | Definition, Types, Effects, & Facts | Britannica
WebApr 11, 2024 · Radiation, flow of atomic and subatomic particles and of waves, such as those that characterize heat rays, light rays, and X rays. All matter is constantly bombarded with radiation of both types from cosmic and terrestrial sources. This article delineates the properties and behaviour of radiation.
What is Radiation? | IAEA - International Atomic Energy Agency
WebJan 25, 2023 · Radiation is energy that moves from one place to another in a form that can be described as waves or particles. We are exposed to radiation in our everyday life. Some of the most familiar sources of radiation include the sun, microwave ovens in our kitchens and the radios we listen to in our cars.
Radiation therapy - Mayo Clinic
WebApr 20, 2023 · Radiation therapy, also called radiotherapy, is a type of cancer treatment. This treatment uses beams of intense energy to kill cancer cells. Radiation therapy most often uses X-rays. But other types of radiation therapy exist, including proton radiation. Modern methods of radiation are precise.
How Radiation Works | HowStuffWorks
WebApr 16, 2024 · Key Takeaways. Radiation is the emission and transmission of energy in the form of electromagnetic waves or particles. Radiation can be ionizing or nonionizing radiation, and only ionizing radiation has enough energy to …
Radiation - World Health Organization (WHO)
WebOct 4, 2023 · 18 April 2021. 6 August 2020. Radiation is energy that travels in the form of waves or particles and is part of our everyday environment. People are exposed to radiation from cosmic rays, as well as to radioactive materials found in the soil, water, food, air and also inside the body.
Electromagnetic radiation - Wikipedia
WebIn physics, electromagnetic radiation (EMR) consists of waves of the electromagnetic (EM) field, which propagate through space and carry momentum and electromagnetic radiant energy. Types of EMR include radio waves, microwaves, infrared, (visible) light, ultraviolet, X-rays, and gamma rays, all of which are part of the electromagnetic spectrum.
Radiation and health - World Health Organization (WHO)
Web7 July 2023 | Q&A. What is radiation and how are people exposed to it? How does radiation affect my health? What are the acute health effects of radiation exposure? How can I protect myself if I’m in an affected area? Are children at greater risk of being harmed from radiation exposure?
Electromagnetic and acoustic radiation | Britannica
Webradiation, Process by which energy is emitted from a source and propagated through the surrounding medium, or the energy involved in this process. Radiation consists of a flow of atomic or subatomic particles or of waves. Familiar examples are light (a form of electromagnetic radiation) and sound (a form of acoustic radiation).
Radiation Basics | NRC.gov
WebMar 20, 2020 · Nuclear Fission. Ionizing Radiation. Alpha Particles. Beta Particles. Gamma Rays and X-Rays. Neutrons. Physical Forms of Radiation. As previously indicated, matter gives off energy (radiation) in two basic physical forms. One form of …
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