How do you pronounce 'becquerel'?

It is pronounced /ˌbɛkəˈrɛl/ (bek-uh-REL), with the main stress on the final syllable.

Who was the becquerel named after?

It was named in honour of the French physicist Antoine Henri Becquerel, who discovered radioactivity in 1896.

How does a becquerel relate to a curie?

One curie (Ci) is a much larger unit, equal to 3.7 × 10^10 becquerels. The becquerel is the modern SI unit.

Is 'becquerel' used in everyday English?

No. It is a highly specialized term used only in scientific, technical, and regulatory contexts related to radioactivity.

Is “becquerel” formal?

Becquerel is usually technical/scientific in register.

becquerel: meaning, definition, pronunciation and examples

UK/ˌbɛkəˈrɛl/US/ˌbɛkəˈrɛl/

Technical/Scientific

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Quick answer

What does “becquerel” mean?

A derived SI unit for measuring radioactivity, defined as one radioactive disintegration per second.

Audio

Pronunciation

Definition

Meaning and Definition

A derived SI unit for measuring radioactivity, defined as one radioactive disintegration per second.

In scientific contexts, it is the standard unit for quantifying the activity of a radioactive source, replacing the older curie. It can also refer to the measurement itself.

Dialectal Variation

British vs American Usage

Differences

No difference in usage or definition between UK and US English. Both adhere to the SI standard.

Connotations

Neutral scientific term in both varieties.

Frequency

Extremely rare outside of specific scientific/technical contexts in both varieties.

Grammar

How to Use “becquerel” in a Sentence

[Number] becquerels of [substance]The activity is [number] becquerels.[Substance] has an activity of [number] becquerels.

Vocabulary

Collocations

strong

radioactiveper cubic metreper kilogramactivity ofmeasured inemission of

medium

highlowlevel ofconcentration ofsource strength

weak

valueratedetectedfoundreading

Usage

Meaning in Context

Business

Only in specific industries like nuclear power or waste management.

Academic

Used in physics, chemistry, environmental science, and medical research papers.

Everyday

Virtually never used. Might appear in news reports about nuclear incidents or food contamination.

Technical

The primary domain. Used in radiological protection, nuclear physics, and environmental monitoring.

Vocabulary

Synonyms of “becquerel”

Neutral

Bq (abbreviation)

Weak

disintegrations per second (dps)

Watch out

Common Mistakes When Using “becquerel”

Incorrect pluralisation (e.g., 'becquerel' for plural; correct is 'becquerels').
Mispronouncing as /bɛˈkwɛrəl/ (emphasis on second syllable).
Confusing with sievert (unit of equivalent dose) or gray (unit of absorbed dose).

FAQ

Frequently Asked Questions

: It is pronounced /ˌbɛkəˈrɛl/ (bek-uh-REL), with the main stress on the final syllable.
: It was named in honour of the French physicist Antoine Henri Becquerel, who discovered radioactivity in 1896.
: One curie (Ci) is a much larger unit, equal to 3.7 × 10^10 becquerels. The becquerel is the modern SI unit.
: No. It is a highly specialized term used only in scientific, technical, and regulatory contexts related to radioactivity.
: A derived SI unit for measuring radioactivity, defined as one radioactive disintegration per second.
: Becquerel is usually technical/scientific in register.

Learning

Memory Aids

Mnemonic

Think: 'BECome QUEen of Radioactivity Every Second' — A Becquerel is one event per second.

Conceptual Metaphor

Not applicable; purely technical measurement.

Practice

Quiz

Fill in the gap

The international standard unit for radioactivity is the , which represents one nuclear transformation per second.

Multiple Choice

What does one becquerel (1 Bq) specifically measure?