Definition: 

The time it takes for the radioactivity of a sample to reduce by half. Find other at Wikipedia, Hyperphysics, and google it of course!

Simulation and Animation:

More details and animation at Furry elephant.

Today we'll work on simulating it, using Excel while being able to adjust variables of all kinds!

Map of nuclear reactors in the world

Nuclear reactors in the US

http://www.ucsusa.org/nuclear_power/reactor-map/embedded-flash-map.html

Phystory

https://sites.google.com/site/projectolivos/year12