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/rˌeɪdiˈeɪʃən/ Listen

noun

Radiation n.

The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness.

The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat.

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Etymology of 'Radiation'

Collaborative International Dictionary of English 0.48

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"Radiation" Quotes from Famous Books

... nature's own mysterious vitality. Hence, the sun's rays and the blaze of burning fuel give not only a material but a spiritual comfort and cheer, which mere warm air is powerless to impart. Here is another reason why direct radiation, even from a black iron pipe, is preferable to a current of warm air brought from a distance: in a room warmed by such a current nothing is ever quite so warm as the air itself unless so situated as to obstruct its flow, but every solid substance near a hot stove or radiator absorbs the radiated ...

— The House that Jill Built - after Jack's had proved a failure • E. C. Gardner

... felt a tingling electric shock. And he thought he could feel a radiation coming from it, giving him a curious sensation of cold. As he reached his hands up and grasped the upper edge of the great ring, he felt what seemed a physical ...

— Astounding Stories, July, 1931 • Various

... It's not hot and it's not cold. When you're in the sunlight you get warm. It's better in the shade. You don't lose any heat by air convection, but radiation and sweat evaporation keep you ...

— Sjambak • John Holbrook Vance

... produced—liquid air. The latter is surrounded by the only yet colder medium, liquid hydrogen, so that no heat can reach it. Under these circumstances, the radium still gives out heat, boiling away the liquid air until the latter has entirely disappeared. Instead of the radiation diminishing with time, it rather seems ...

— Side-lights on Astronomy and Kindred Fields of Popular Science • Simon Newcomb

... matter, gave me a written report on the non- success (up to the present time) of his endeavours to establish communication. He thinks that the proximity of the Magnetic Pole and Aurora Australis might affect things. The radiation is good and sufficient for normal conditions. His suggestion to lead the down lead wires out to the ahead and astern would increase scope, but I cannot countenance it owing to unsettled state of ice and ...

— South! • Sir Ernest Shackleton

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