Half-Life Calculator — Formula
## Half-Life Formula
### Formula
**N(t) = N₀ × (1/2)^(t/t½)**
Where:
- **N₀** = initial quantity
- **t** = elapsed time
- **t½** = half-life
### Properties
- After 1 half-life: 50% remains
- After 2 half-lives: 25% remains
- After 3 half-lives: 12.5% remains
- After 10 half-lives: ~0.1% remains
### Formula
**N(t) = N₀ × (1/2)^(t/t½)**
Where:
- **N₀** = initial quantity
- **t** = elapsed time
- **t½** = half-life
### Properties
- After 1 half-life: 50% remains
- After 2 half-lives: 25% remains
- After 3 half-lives: 12.5% remains
- After 10 half-lives: ~0.1% remains
Exemplo Resolvido
100 units with a half-life of 5 after 15 time units.
- Number of half-lives = 15/5 = 3
- Remaining = 100 × (0.5)³
- = 100 × 0.125
- = 12.5