Calculate Half Life with These Free Online Half Life Calculators
Half Life Calculators? Find one online to help with your physics, nuclear or radioactive decay study. Half-life is the time required for a quantity to reduce to half its initial value. It is the opposite of doubling time and is an exponential equation. Half-life can also be used in biology to determine how long a substance stays in the human body.
Find a Free Online Half Life Calculator
What is the definition of a half-life?
Find Free Online Half-Life Calculators. A half-life is the amount of time it takes for a given quantity of a substance to decrease to half of its original amount/value. The term half-life is commonly used to define how long radioactive substances take to decay to half their initial amount.
Where did the term half life come from?
Ernest Rutherford a New Zealand physicist coined the term half-life period in 1907 when studying the decay of the element radium. This term was later shortened to half-life
What is the half life of some elements
- Uranium 238: 4.5x109 years
- Plutonium 239: 2.4x104 years
- Radon 220: 52 seconds