Which information can be determined using half-life?

Half-line is defined as the measurement of time which is conducted over a radioactive material which is reduced later into half of its initial value.

Explanation:

And the value which is extracted is later on used to extract the age of elements.

It has a specific notation which is defined or denoted by t1/2. The reason we use half-line is because decaying of the radioactive is of a chance.

For example, if two identical items are taken together, we can see which one will decay quicker.