alwaysgivemyl-o-v-e-t-o-y-o-u: thatscienceguy: When glass breaks, the cracks move at around 3000 Miles per hour!! (4500km/h!) That’s why, even in slow motion, the main cracks in the glass appear virtually instantly as the hammer hits. This is actually

alwaysgivemyl-o-v-e-t-o-y-o-u: thatscienceguy: When glass breaks, the cracks move at around 3000 Miles per hour!! (4500km/h!) That’s why, even in slow motion, the main cracks in the glass appear virtually instantly as the hammer hits. This is actually

tags: توكلت على الله,

from: https://gadah-world.tumblr.com/post/60357543795