Half-Life Calculator
Calculate radioactive decay and determine how much of a substance remains after a given time period.
Half-Life Calculator
About Half-Life & Radioactive Decay
Half-life is the time required for half of a radioactive substance to decay. This concept is crucial in nuclear physics, carbon dating, and medical applications.
Key Formulas
- Decay Formula: N(t) = N₀ × e^(-λt)
- Decay Constant: λ = ln(2) / t½
- Half-Life: t½ = ln(2) / λ
Common Half-Lives
- Carbon-14: 5,730 years
- Uranium-235: 703.8 million years
- Iodine-131: 8.02 days
- Technetium-99m: 6.01 hours