Technology
-
ArticleCan you really build a house with straw? Yes, with dry, tightly baled straw you can build a durable, beautiful home.Pilgrim Holiness Church in Arthur, Nebraska. The church was built out of baled straw in 1928 and is listed in… -
ArticleHow does a touch screen work? By using your finger to disrupt an electrical current.Sailors use a Submarine Engine Room touch-screen training simulator. Oct. 22, 2015. U.S. Navy photo by Mass Communication Specialist 1st Class Martin L. Carey/Released,… -
ArticleHow does an hourglass measure time? By using carefully calculated amounts of sand.18th Century Sandglass. Morristown National Historic Park, National Park Service Museum Collections.The hourglass is sometimes referred to as a sand clock or a sandglass. Like other… -
ArticleHow is the light of a lighthouse magnified so that it can be seen many miles … A lighthouse light is a concentrated beam, focused by special lenses. Because of its highly increased intensity, this beam of light can travel a very long distance.Interior view of Fresnel lens in… -
ArticleWhat is a GPS? How does it work? The Global Positioning System (GPS) tells youwhere you are on Earth.GPS III Satellite. U.S. Government photo, GPS.gov Multimedia Library.It’s eleven o’clock … do you know where your kids are? Would you like… -
ArticleWho came up with the idea for Velcro? The invention of Velcro is just one example of design imitating nature. Human design modeled on biology and natural processes is called biomimicry. By observing nature, scientists can often find solutions to… -
ArticleWho invented electric Christmas lights? Thomas Edison and Edward Johnson (1880 & 1882) and Albert Sadacca (1917).National Christmas Tree on the National Mall, 1997. Carol M. Highsmith, photographer. Prints and Photographs Division, Library of Congress.Thomas Edison, the… -
ArticleWho invented frozen food? Several individuals, but most credit Clarence Birdseye.USDA scientists flash-freeze and store berries for later evaluation of their suitability as a frozen product. Agricultural Research Service, U.S. Department of Agriculture.Of course, frozen food… -
ArticleWho invented the toothbrush and when was it invented? Various peoples. 1938 (modern).Poster from Gellé Frères Perfumers, Avenue de l’Opéra, 6, Paris. J. Cheret, 1889. Prints and Photographs Division, Library of Congress.The toothbrush as we know it today was not invented… -
ArticleWho is credited with inventing the telephone? Alexander Graham Bell is credited with being the inventor of the telephone since his patent and demonstrations for an apparatus designed for “transmitting vocal or other sounds telegraphically…causing electrical undulations” were successful.Drawing…