The cotton gin made much of the southern United States very rich, but cotton plantation owners rarely paid Whitney for the use of his invention, and Whitney went out of business. The windshield wiper was invented by Mary Anderson in 1903 to help streetcars operate safely in the rain. Windshield wipers became standard equipment on cars a decade later. At the time, Berners-Lee was working at CERN, the European Particle Physics Laboratory located in Geneva, Switzerland. After he wrote the first browser in 1990, the World Wide Web was up and going.
Children can easily make log cabins and other structures from the tiny wooden logs.
John patented his toy in 1920, and sold the logs through his toy company, the Red Square Toy Company. U 235 and U 238 by gaseous diffusion. Madam Wu also she studied the molecular changes in hemoglobin associated with sickle-cell anemia. If the inventor or invention you're interested in isn't here, please e-mail us . As stated in our privacy policy , we fully respect your privacy and will not use your e-mail address for any purpose other than the newsletter subscription.