History of the Discovery of Radioactivity (6)

Science

Not quite remember

I easily remember

Definition of one curie

One curie is 3.7 × 10^10 decays per second

S.I unit for radioactivity

The S.I. unit of radioactivity is becquerel (Bq)

Definition of 1 becquerel (Bq)

Is 1 decay per second 1 Bq = 1 decay/s

Radioactive substance studied by Marie and Pierre Curie

Radium-226

Definition of half-life of radioactive decay

Half-life, T 1/2 is the time taken for the number of undecayed nuclei to be reduced to half of its original number (value)

Units of radioactivity (1)

curie (Ci)

Units of radioactivity (2)

becquerel (Bq)

The quantity measured in radioactivity unit

The decay rate of the nucleus of a radioactive element

Wilhelm Roentgen's X-ray photograph of his wife's hand

Wilhelm Roentgen

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