Product Review

Wave Form Helix - A Scientist's Version of the Classic Toy* This is a Wave Form Helix that can be: 1) used as a scientific instrument to measure a wave function (it actually has a higher spring constant than the classic toy); or 2) unleashed down a wicked set of stairs. It has a 7.5 cm diameter, 10 cm long when closed, and up to 3 meters in length when fully stretched.