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Translate files Radioactivity
/ˌreɪ.di.oʊˈæk.tɪ.vɪ.ti/
Meaning & Definition
noun
The emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
Radioactivity is a natural process that occurs in elements such as uranium and thorium.
The property of certain elements to emit radiation.
Scientists study radioactivity to understand the behavior of unstable isotopes.
The process through which a substance gives off energy in the form of particles or electromagnetic waves.
Radioactivity can be harmful, which is why safety measures are strictly enforced in nuclear facilities.
The rate at which a radioactive substance releases radiation.
The radioactivity of the sample was measured in units of becquerels.
An aspect of nuclear physics that examines the decay of radioactive materials.
Research in radioactivity has led to advancements in medical imaging techniques.
Etymology
The term originates from the combination of 'radio-' from radiate and 'activity' referring to the process of emitting radiation.
Common Phrases and Expressions
background radiation:
The level of radiation that exists in the environment from natural sources.
half-life:
The time required for half the quantity of a radioactive substance to decay.
radiological hazard:
A situation involving exposure to radiation that may pose a risk to health.
Related Words
Slang Meanings
Going nuclear
When things get out of hand or very intense, some might say it's going nuclear, referencing the explosive nature of nuclear reactions.
Hot stuff
When describing something or someone that is very radioactive or dangerous, people might colloquially refer to it as hot stuff.