Scientists Have Figured Out Why Shoelaces Untie Themselves!
So, your shoelaces weirdly untie themselves while you're running, or walking, and you end up tripping. We've mostly come to accept this as normal, even though it is a bit tiring to have to stop every few meters to retie a pair of especially slippery laces. Why though, do shoelaces untie themselves so easily? Researchers at University Of California Berkely - Graduate student Christine Gregg, Christopher Daily-Diamond and their professor Oliver O'Reily teamed together to find out.. They eventually published their findings on April 12 in Proceedings of the Royal Society A. The trio decided they would try to figure it out by recording Christine Gregg, a co-author of the study, and also a runner on a treadmill while she ran. Capturing the movements of her feet with a camera that took 900 frames per second. They noticed that as Christine ran, her feet hitting the floor of the treadmill struck the ground at about seven times the force of gravity. The knot stre