Stanford University's Manu Prakash, Ph.D., loves coming up with cheap, rugged scientific equipment, like his 50-cent microscope made of folded cardboard. Now he's followed that up with another ingenious chemistry tool: A $5 device that uses the guts from a music box to control chemical reactions with super precision.
Do you ever long for the good ol' days? When a rickety school desk was enough to protect you from a nuclear blast, and chemistry sets contained real (read: deadly) chemicals?
While an off-the-shelf chemistry set of today consists of little more than baking soda, some vinegar and a plastic volcano, old sets were filled with good stuff, like explosive nitrates and deadly cyanide compounds.