Half-life
From Conservapedia
Half-life is the time it takes for half of the original sample of a radioactive isotope to decay.[1] If the exponential decay of a radioisotope is expressed as 
, then the half-life is equal to τ ln 2. Knowing these decay rates are important for dating, such as with carbon-14.
References
- ↑ Wile, Dr. Jay L. Exploring Creation With Physical Science. Apologia Educational Ministries, Inc. 1999, 2000
