Potato clock was invented by William A. Borst in 1983. William was helping his stepdaughter in her science project when he was reminded of one of his physics class in which potatoes were used to generate energy. William fixed two metal prods into a potato and potato battery was made ready to generate energy. He […]
Who invented bicycle?
The term bicycle dates from 1869. To answer a question as to who invented a bicycle is not easy. To come into the form which we find today, bicycle has passed through many phases and through many people. The first bicycle called Velocipede was built by the French nobleman Comte de Sivrac in 1791 . […]
Who invented alternating currents?
Nikola Tesla, a scientist of the 20th century takes alternating currents to his name. He was not involved with the scientist community as he did not get along with his co scientists. FBI took over his notes and documents which were sealed in 80 trunks for National security purposes after his death. His family could […]
Who invented cellphones?
The idea of cellphones is not new to the human race. Its development started in the year 1947 when these were used mainly for military operations and required a large backpack device to transmit phone’s signals to the nearby power stations. It was Doctor Martin Cooper who invented the first cellphone on April 3,1973. During […]
Who invented DVD?
DVD is abbreviated for “digital video discs” and then “digital versatile discs”. It is a multi –application disc formatted for read only, recordings and rewriteable applications used for video, data storage, games and audio applications. No single person can claim to have invented DVD’S. The DVD evolved from the CD in the year 1993. It […]
Who invented zipper?
The credit of inventing zipper goes to Whitcomb Judson of Chicago in 1891. He got the patent for this clasp locker in August 1893. Judson was tired of tying his shoe laces and then had an idea of inventing hook and eye fasteners for the shoes. Though it is believed that in 1851 Howe made […]
Who invented velcro?
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 dog’s fur. George noticed its natural hook and loop quality and started making a […]
Who invented Valentine?
Valentine’s Day started in 500 A. D. It was started by Pope Saint Gelasius I, the third pope of the Catholic Church. He named the day after Saint Valentine or Saint Valentinus. The name Valentine is derived from a Latin word “valens” meaning worthy, strong or powerful. In ancient Rome a Pagan festival was celebrated […]
Who invented traffic signal?
The first efficient traffic signal was invented in 1923 by Garrett A. Morgan. Garrett A. Morgan was an African- American inventor. As soon as the automobiles were introduced in the 20th century the condition of traffic deteriorated and the roads were full of accidents. There was an urgent need to control traffic, many inventors came […]
Who invented telephone?
The first telephone was made by Alexander Graham Bell in 1876. Historians believe that another inventor Elisha Gray also invented the telephone at the same time independently and both the inventors rushed to the patent office to get their invention patented but Graham Bell got the patent first on March 7, 1876. Graham bell was […]