Bottom line: Contrary to what was believed previously, common bacteria that cause infections such as the cold and strep throat â including Streptococcus pneumoniae and Streptococcus pyogenes â can persist for long periods on surfaces like furniture and toys.
Fire-control radar helps aim a gun or missile so that it will hit the target when fired and must be more accurate than search radar. The U.S. military has also developed specialized types of radar. For example, Miniature Synthetic Aperture Radar (MSAR) is used on aircraft to provide high-quality images in all kinds of weather. History of Radar Radar technology began with experiments using radio waves in the laboratory of German physicist Heinrich Hertz in 1887.
he thought that memories and thoughts were recorded on the brain and could be watched like a movie through the retina he thought he could control the weather and attempted to develop this technology eventually he was able to produce spectacular artificial lightning bolts he developed the first radar system