Becquerel

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Definition
  1. Noun:
    • The SI derived unit of radioactivity: A "becquerel" is the unit of measurement for radioactive decay, defined as one disintegration per second.
    • A person (Antoine Henri Becquerel): "Becquerel" can also refer to the French physicist who discovered radioactivity.
Examples of Usage
  • Noun (Unit):
    • The sample's activity was measured at 5,000 becquerels.
    • Regulations limit the becquerel content in drinking water.
  • Noun (Person):
    • Becquerel shared the 1903 Nobel Prize in Physics with the Curies.
Advanced Usage
  • "Becquerel per kilogram (Bq/kg)": A common unit for measuring the specific activity (radioactivity per unit mass) of a substance.
    • The soil contamination was reported as 200 becquerels per kilogram.
Variants and Related Words
  • Curie (Ci): A non-SI unit of radioactivity, where 1 curie equals 3.7 × 10¹⁰ becquerels.
  • Radioactivity (n): The spontaneous emission of radiation from an unstable atomic nucleus.
  • Disintegration (n): The process by which an atomic nucleus loses energy by emitting radiation; one such event equals one becquerel.
Synonyms
  • Bq (abbreviation): The standard symbol for the becquerel unit.
Related Phrases
  • Becquerel rays: An archaic term for the radiation discovered by Antoine Becquerel, now understood as a mix of alpha, beta, and gamma radiation.
    • Early experiments with becquerel rays led to the discovery of radioactivity.
Noun
  1. French physicist who discovered that rays emitted by uranium salts affect photographic plates (1852-1908)

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