TrendTok Hub on Instagram: "The post features a 61-second slow-motion video compilation of tempered glass shattering in construction settings, starting with a hand tapping a stair railing that propagates cracks into a frosted pattern, emphasizing safety over sharp shards. Tempered glass undergoes heat treatment to induce surface compression, causing complete fragmentation into dull granules upon failure—a design backed by materials science research showing 4-5 times greater strength than anneale