Find out about the source of heat from the Earth's core. (Published 19 July 2011)

Information about the synthetic, radioactive element, Mendelevium, atomic number 101. Covers its discovery, physical and atomic properties, and details about permissible exposure.

Enrico Fermi was a titan of twentieth-century physics. He outlined the statistical laws that govern the behavior of particles that abide by the Pauli exclusion principle and developed a theoretical model of the atom in his mid-twenties....

Based on the principle of antibody-antibody interaction, this ELISA test for HIV detection allows for easy visualization of results and can be completed without the additional concern of radioactive materials use.

Watch alpha particles escape from a polonium nucleus, causing radioactive alpha decay. See how random decay times relate to the half life. Java required.

Nice summary of the basic facts known about berkelium. Easy to follow.

A visual representation and explanation of what happens during nuclear fission.

In this interactive tutorial you will explore how geologists use clues in rocks to determine the order in which rocks formed. Learn how principles of radioactivity are used to assign actual ages to rocks. Students will explore fossils...

[Free Registration/Login may be required to access all resource tools.] How and why beta decay occurs, its dangers, beta-minus and beta-plus decay and how to write a balanced nuclear equation for beta decay.

[Free Registration/Login may be required to access all resource tools.] Explains how and why gamma decay occurs, what gamma rays are, and why gamma radiation is the most harmful.