SCIENCE TWIST ON A CLASSIC || A wave form heli x /slinky is the scientist's version of the classic toy with a higher spring constantMEASURES WAVE FUNCTION || Can be used as a scientific instrument to measure a wave function and for demonstrating a variety of physics conceptsFUN AND EDUCATIONAL || Send it down a set of stairs for endless nostalgic fun while learning about waves, momentum, and motionCOMPACT || When closed, heli x measures 4" in length and 3" in diameterSTRETCHY || Stretches...