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.
Its amazing no one took advantage of the problem until 1948. George de Mestral, a Swiss engineer, returned from a walk one day in 1948 and found some cockleburs clinging to his cloth jacket.When de Mestral loosened them, he examined one under his microscope. The principle was simple.ascinating facts about the invention of Velcro by George de Mestral in 1948.