understanding radioactive decay and half-life is crucial for explaining the heat generated by radioactive isotopes within Earth’s interior. These Crosscutting Concepts and Science and Engineering ...

These nuclei undergo change spontaneously, that is, without outside help. When unstable nuclei undergo change they give off radiation. Atoms which have unstable nuclei are radioactive and are called ...

This activity is measured in becquerels. Different radioactive isotopes have different half-lives. For example, the half-life of carbon-14 is 5,730 years, but the half-life of francium-223 is just ...

This could be stated as a fraction, decimal or ratio. For example the amount of a sample remaining after four half-lives could be expressed as: a fraction - a \(\frac{\text{1}}{\text{2}}\) ...

An unexpected radioactive discovery beneath the Pacific Ocean seabed may provide researchers with a new global geologic time ...

Australia's Open Pool Australian Lightwater (OPAL) research reactor has the potential to “make a real difference” in the effort to deal with the global shortage of radioactive isotopes used ...

A radioactive isotope's nucleus is unstable and spontaneously decays, giving off radiation and changing into a different isotope. The rate at which nuclei decay is constant. Half-life describes ...

The table below shows the fraction by weight of the three isotopes in any quantity of natural uranium, their half lives, and specific activity. The half life of a radioactive isotope is the time taken ...

As another plus, this carbon-14 is derived from graphite blocks, which are a byproduct of nuclear fission reactors. So, not ...

Beryllium-10, a rare radioactive isotope produced by cosmic rays in the atmosphere, provides valuable insights into the Earth ...