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"
The ideal voice for radio may be defined as showing no substance, no sex,
no owner, and a message of importance for every housewife.
-- Harry V. Wade