
Radiation - Wikipedia
The radiation emitted covers the entire electromagnetic spectrum and the intensity of the radiation (power/unit-area) at a given frequency is described by Planck's law of radiation.
Radiation | Definition, Types, Effects, & Facts | Britannica
6 days ago · 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 matter with which it …
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 energy waves or …
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 most familiar …
About Health Effects of Radiation | Radiation and Your Health | CDC
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 measuring …
Radiation - World Health Organization (WHO)
Jul 10, 2024 · 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 …
Basics of Radiation - REAC/TS
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.
What is Radiation? - UCSF Radiology
Radiation is a form of energy that travels through space or matter. It's all around us, coming from both natural and man-made sources. We are all exposed to radiation every day, mainly from the sun.
Heat Transfer - Conduction, Convection, Radiation
Sep 18, 2022 · Key Takeaways: Heat Transfer Heat transfer is the movement of thermal energy from a hotter object to a cooler one. The three primary modes are conduction (contact), convection (fluid …
Radiation Basics | Nuclear Regulatory Commission
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 …