In addition to localized basis sets, plane-wave basis sets can also be used in quantum-chemical simulations. Typically, a finite number of plane-wave functions are used, below a specific cutoff energy which is chosen for a certain calculation.
Velcro was invented by George de Mestral a Swiss electrical engineer in 1941. This idea of inventing Velcro came to him when one day he returned after a walk from the hills and found cockleburs stuck to his clothes and his dogâs fur.George noticed its natural hook and loop quality and started making a fabric fastener on the same quality.his idea of inventing Velcro came to him when one day he returned after a walk from the hills and found cockleburs stuck to his clothes and his dogâs fur. George noticed its natural hook and loop quality and started making a fabric fastener on the same quality.
The original patented hook and loop fastener was invented in 1948 by the Swiss electrical engineer George de Mestral, who patented it in 1955 and subsequently refined and developed its practical manufacture until its commercial introduction in the late 1950s.elcro Industries is a privately held worldwide corporation manufacturing consumer and industrial products. Among them is a series of mechanical-based fastening products, including a brand of fabric hook and loop fastener often colloquially referred to by the company name, Velcro.