EmperorOfCanada writes "A 15 year old girl has invented a very cheap and easy way to build your own cloud diffusion chamber; which is a neat way to see various radiation particles leave trails. Radiation such as cosmic rays, background radiation, and any handy radiation sources such as a disassembled smoke detector. Video" Link to Original Source
Dennis Ritchie is twice as bright as Steve Jobs, and only half wrong.
-- Jim Gettys