Dec 19, 2025 · 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 …

The various forms of electromagnetic radiation known today include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X rays, and gamma rays.

Light, sound, heat, and X-rays are examples of radiation. The different kinds of radiation fall into a few general categories: electromagnetic radiation, mechanical radiation, nuclear radiation, and …

Dec 19, 2025 · Radiation - Particles, Waves, Energy: Matter in bulk comprises particles that, compared to radiation, may be said to be at rest, but the motion of the molecules that …

Dec 13, 2025 · electromagnetic radiation, in classical physics, the flow of energy at the universal speed of light through free space or through a material medium in the form of the electric and …

Dec 18, 2025 · The ozone layer effectively blocks almost all solar radiation of wavelengths less than 290 nm from reaching Earth’s surface, including certain types of ultraviolet (UV) and other …

Dec 19, 2025 · Radiation - Imaging, Therapy, Detection: The uses of radiation in diagnosis and treatment have multiplied so rapidly in recent years that one or another form of radiation is …

Dec 19, 2025 · Ionizing radiation, flow of energy in the form of atomic and subatomic particles or electromagnetic waves that is capable of freeing electrons from an atom, causing the atom to …

Dec 18, 2025 · Most of the radiation emitted by a moderately heated surface is infrared; it forms a continuous spectrum. Molecular excitation also produces copious infrared radiation but in a …

Oct 21, 2025 · Radiation therapy, the use of ionizing radiation (high-energy radiation that displaces electrons from atoms and molecules) to destroy cancer cells. In addition to treating …