How do velcro strips work ?
What is the mystery in coarse Velcro strip used for fastening the straps of sports shoes, briefcases, wallets, belts, jerkins etc.? To start with read about an interesting incident: It was the year of 1948. On one early afternoon a researcher named George Dimistral was strolling with his dog in the countryside of Switzerland. He unleashed the dog to let it roam about in the countryside while he strolled. When they returned home Dimistral found strands of some wild flowers stuck all over the dog's furry body. He tried to pull the strands out of the dog's hair but did not find it easy. They held fast in the hair and required some force to pull them out. George Dimistral being a researcher to the core got interested in this mystery and examined some strands under a microscope. He found that the ends of those strands were like hooks. Once the dog's hairs were hooked they remained hooked fast.