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A half-life calculator determines the time for any quantity to decrease by half under exponential decay: N(t) = N₀ × (1/2)^(t/T). Applications range from radioactive decay (carbon-14 half-life: 5,730 years) to drug pharmacokinetics (aspirin half-life: 3–5 hours) and population decline modeling.

Guida passo passo

  1. 1Input decay rate or half-life
  2. 2Calculate remaining amount over time
  3. 3Apply exponential decay

Esempi risolti

Ingresso
10 gram sample, 10-day half-life
Risultato
5g after 10 days
Radioactive decay

Errori comuni da evitare

  • Not double-checking results
  • Ignoring edge cases

Domande frequenti

What does this calculator do?

Input values

How do I use this calculator?

System calculates

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Impostazioni

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