1955Velcro was inspired by burrs stuck to a dog’s fur.

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Swiss engineer George de Mestral examined burdock burrs under a microscope after a walk and saw tiny hooks. He developed hook-and-loop fastening and patented it in the 1950s.

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<span class="aj-year">1989</span>The World Wide Web was proposed as a way to share physics documents.<span class="aj-year">1975</span>The first digital camera weighed about 4 kg.<span class="aj-year">1947</span>The first microwave oven was taller than a person.