T1/2

Half-life, denoted t1/2, is an important concept in physics, chemistry and other sciences. It describes the time it takes for half of the original amount of radioactive material to decay.

The half-life can be measured for any radioactive substance and is an individual characteristic of each isotope. This means that different isotopes have different half-lives and they can be used for different purposes.

One of the most common uses of half-life is to determine the age of materials containing radioactive isotopes. For example, carbon-14 has a half-life of about 5,700 years, allowing it to be used to determine the age of organic materials such as wood or bones.

The half-life is also used medically to treat cancer. Radioactive drugs can be used to kill cancer cells, and the half-life helps determine the dose of radiation to be given.

Overall, half-life is an important concept in science and has a wide range of applications. It allows scientists to better understand radioactive processes and use them in fields ranging from archeology to medicine.