Half-Life Calculator

1. Initial Amount: Starting quantity.
2. Half-Life: The time it takes to halve.
3. Elapsed Time: How long has passed.
4. Result: The Remaining Amount.

The Half-Life Calculator estimates how much of a radioactive substance remains after a certain time. It is based on the principle that decay happens exponentially.

Used in nuclear physics, carbon dating (archaeology), and pharmacology (drug elimination rates).