
Behind the Tape Screech: Supersonic Cracks Rip Across a Roll
High-speed footage and synchronized audio reveal that Scotch tape peels via narrow transverse cracks racing across the tape at 250–600 m/s (roughly 560–1340 mph). The rapid cracks leave a temporary vacuum that travels with the crack to the tape edge, collapsing and producing a final sound pulse—the familiar screech is essentially a tiny sonic boom.













