Radiation is the emission of energy from a source in the form of waves or particles. It can be either non-ionizing radiation, such as radio waves, microwaves, and visible light, or ionizing radiation, such as X-rays and gamma rays. Radiation is used in a variety of different fields, including medical imaging, nuclear power production, and cancer treatments.

Radiation therapy is a type of cancer treatment that uses high doses of radiation to kill cancer cells and shrink tumors. It works by damaging the DNA inside the cancer cells, which stops them from growing and dividing. Radiation therapy can be used alone or in combination with other treatments, such as chemotherapy or surgery. It is most commonly used to treat cancers of the brain, breast, lung, and prostate.

Radiation is energy that travels in the form of waves or particles. It can be either natural or man-made. Examples of natural radiation include sunlight, cosmic rays, and radioactive decay from naturally occurring elements such as uranium and radon. Man-made radiation includes x-rays, gamma rays, and radiation from nuclear reactors. Radiation can be both beneficial and harmful to living organisms. The effects of radiation depend on the type of radiation, the amount of exposure, and the sensitivity of the organism exposed.

Gamma radiation is a type of electromagnetic radiation emitted by the nucleus of an atom during radioactive decay. It has the highest energy and shortest wavelength of all types of electromagnetic radiation. Gamma rays are typically produced by nuclear decay, nuclear fusion, and certain types of high-energy particle collisions. Gamma radiation is highly penetrating and can travel long distances in air, water, or other materials. Gamma radiation can be harmful to humans if it is not properly shielded or monitored.

Radiation pressure is the pressure exerted upon any surface exposed to electromagnetic radiation. It is the result of the transfer of momentum from the photons to the surface. Radiation pressure is dependent on the intensity of the radiation, and is inversely proportional to the distance from the source of radiation.

Radiation burns are caused by exposure to high doses of ionizing radiation, such as from x-rays, gamma rays, or particle beams. They can range from mild reddening of the skin to severe blistering and ulceration. Treatment for radiation burns depends on the severity of the burn, but may include pain relievers, antibiotics, topical creams and ointments, dressings, and surgery.