The Supersonic Physics Behind Screechy Peeling Tape

(Inside Science) -- Most of us are familiar with the screeching noise packing tape makes when it's peeled off a box, as well as the frustration of failing to cleanly remove a label from a new purchase. It turns out that the jerky stop-and-go motion we experience when peeling tape occurs at a microscopic level as well.Scientists exploring the physics of peeling tape have observed that tape detaches from a surface in a series of tiny lines perpendicular to the peeling direction that can tr