Radiation | Definition, Types, Effects, & Facts | Britannica
2024年11月4日 · 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
How Radiation Works - HowStuffWorks
2024年4月16日 · 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 potentially cause damage to cells and DNA.
What is Radiation? | IAEA - International Atomic Energy Agency
2023年1月25日 · 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 - Wikipedia
In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or a material medium. [1][2] This includes: Radiation is often categorized as either ionizing or non-ionizing depending on the energy of the radiated particles.
Radiation Basics | US EPA - U.S. Environmental Protection Agency
2024年10月1日 · Radiation can come from unstable atoms or it can be produced by machines. There are two kinds of radiation; ionizing and non-ionizing radiation. Learn about alpha, beta, gamma and x-ray radiation.
Radiation Basics | NRC.gov
2020年3月20日 · Radiation is energy given off by matter in the form of rays or high-speed particles. All matter is composed of atoms. Atoms are made up of various parts; the nucleus contains minute particles called protons and neutrons, and the atom's outer shell contains other particles called electrons.
Basics of Radiation - ORISE
Radiation is energy, in the form of particles or electromagnetic rays, released from radioactive atoms. The three most common types of radiation are alpha particles, beta particles, and gamma rays. Alpha-emitting materials can be harmful to humans if the materials are inhaled, swallowed, or absorbed through open wounds.
Understanding Radiation - Union of Concerned Scientists
2024年10月4日 · Radiation is energy that’s released during that process—and it can be dangerous. Essential readings for understanding the world of radiation, radioactive materials, and the threats they pose to human health. What are radioactive materials, and …
Radiation - Simple English Wikipedia, the free encyclopedia
In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. [1][2] This includes: seismic waves. Radiation may also refer to the energy, waves, or particles being radiated.
Radiation Definition and Examples - ThoughtCo
2019年12月8日 · 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.