(physics, chemistry) The protection of semiconductor devices from the effects of ionizing radiation.

physical barriers designed to provide protection from the effects of ionizing radiation, including radioactive material / the technology of providing such protection

(physics, chemistry) The study of the chemical changes that result from the absorption of ionizing radiation.

(physics) The pressure exerted by electromagnetic radiation on an object on which it impinges, as a consequence of its momentum.

(medicine) The use of ionizing radiation to treat disease, especially cancer.

(astronomy) All the electromagnetic radiation and subatomic particles radiated from the Sun, especially that part that reaches the Earth

(physics) electromagnetic radiation that has a frequency of about 3 to 30 GHz

(engineering) Electromagnetic waves with frequencies around one terahertz. / (engineering) Especially electromagnetic waves in the range 0.1-30 THz (or subranges there of, see T-rays or T-waves).

(physics) The radiation of beta particles as a result of radioactive decay.

(physics) The radiation of alpha particles as a result of radioactive decay.