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 …
Radiation | Definition, Types, Effects, & Facts | Britannica
Nov 4, 2025 · All matter is constantly bombarded with radiation of both types from cosmic and terrestrial sources. This article delineates the properties and behaviour of radiation and the …
Radiation Basics | US EPA
Sep 10, 2025 · Radiation is energy. It can come from unstable atoms that undergo radioactive decay, or it can be produced by machines. Radiation travels from its source in the form of …
What is Radiation? - International Atomic Energy Agency
Jan 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 …
About Health Effects of Radiation | Radiation and Your Health ...
Feb 19, 2024 · Radiation can damage the DNA in cells, and high doses can lead to cancer later in life. We've been studying the effects of radiation on living tissue for more than 100 years. By …
What is Radiation and What Types of Radiation Are There?
Radiation is energy that comes from a source, travels through space and may be able to penetrate various materials.
What Are The Different Types of Radiation? | Nuclear ... - NRC
There are four major types of radiation: alpha, beta, neutrons, and electromagnetic waves such as gamma rays. They differ in mass, energy and how deeply they penetrate people and objects.