radiation

放射線

放射性物質から出るエネルギー。生物を傷つけることも治療に使われることもある。

やさしい英語で： Energy released by radioactive materials that can damage living things or be used in medical treatment.

• The workers were exposed to radiation.
• She received radiation treatment for cancer.
• Thick walls protect staff from harmful radiation.

よく使う表現： radiation exposure, radiation treatment, radiation sickness, a radiation leak

放射、放射エネルギー

波や小さな粒子として、空間や物質の中を伝わるエネルギー。

やさしい英語で： Energy travelling through space or materials as waves or tiny particles.

• The sun gives off radiation.
• Dark surfaces absorb more heat radiation.
• Scientists measure the radiation emitted by distant stars.

よく使う表現： solar radiation, heat radiation, electromagnetic radiation, emit radiation

放射、発散

中心や表面から外へ向かって何かが広がること。

やさしい英語で： The spreading of something outwards from a central point or surface.

• The radiation of joy filled the room.
• He sensed a radiation of love from the audience.
• The drawing shows the outward radiation of lines from a centre.

使い方： radiation of something from something (She felt a radiation of warmth from the welcoming crowd.)

類義語： emanation, outward spread

よく使う表現： radiation of love, outward radiation, radiation of warmth