मुफ्त रेडियोधर्मी सक्रियता कैलकुलेटर
रेडियोधर्मी नमूने की सक्रियता निकालें। क्षय स्थिरांक और परमाणु संख्या से सक्रियता जानें।
सक्रियता
19,254,088,348,887,370 Bq
Activity vs Number of Atoms
सूत्र
Radioactive Activity
Activity measures the rate of radioactive decays per unit time.
Formula
A = lambda * N = (ln2 / t_half) * N
where lambda is the decay constant, N is the number of atoms, and t_half is the half-life. The unit is becquerel (Bq) = 1 decay/second.
हल किया गया उदाहरण
1 x 10^20 atoms with a half-life of 3600 s (1 hour).
- 01lambda = ln(2) / t_half = 0.6931 / 3600 = 1.925e-4 /s
- 02A = lambda * N = 1.925e-4 * 1e20
- 03A = 1.925e16 Bq
- 04A = 1.925e16 / 3.7e10 = 520,270 Ci
अक्सर पूछे जाने वाले प्रश्न
What is a becquerel?
One becquerel (Bq) equals one radioactive decay per second. It is the SI unit of activity, named after Henri Becquerel.
What is a curie?
An older unit of activity: 1 Ci = 3.7 x 10^10 Bq. Originally defined as the activity of 1 gram of radium-226.
Does activity change over time?
Yes. As atoms decay, N decreases, so activity decreases exponentially: A(t) = A_0 * (1/2)^(t/t_half).
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