Try it yourself:
| @1 |
LN2
|
|
| @2 |
log(2)
|
LN2 is ln(2), approximately 0.693147. It appears in half-life, information, and exponential-growth formulas.
A half-life relation often uses LN2 divided by a decay constant. Pair it with log(), exp(), and division when rearranging exponential models.
Use consistent time units in decay calculations and avoid rounding LN2 early.
Enter LN2 on a calculator line to see its built-in value, or place the name inside a longer expression. Keep any displayed unit attached when converting or combining physical quantities, and check that every other value uses a compatible dimension.
The example above is editable, so you can replace surrounding values and test the constant in your own formula. Browse all constants to compare related values and notation.