The bar code was invented by Joseph Woodland and Bernard Silver in 1948. It was designed as a ‘bulls eye’ symbol comprising concentric circles. The initial idea of the bar code was to use it as a method for classifying grocery products. In 1970 a standard was set for all products and the Universal Grocery Products…
Professor Jagadish Chandra Bose demonstrated that the electric rays had the ability to travel long distances without the help of any wire. He did so by initiating the electric rays using a radiator in the lecture room, which passed through three solid walls of the lecture room, an intervening room, to a third room. The receiver…
Hero of Alexandria was a mathematician and an engineer about the time of Christ in the 1st century AD. He built a machine that could dispense holy water by accepting a coin. This was the world’s first vending machine. Its internal structure comprised essentially of levers resembling a balance beam. On one end of the beam,…
The e-mail predates the Internet or the World Wide Web by more than a decade. The e-mail originated in the research labs of the United States Defence Labs in the late 1960s, in the ARPANET project. It was used as a note or a file that was transferred from one user’s folder to another user’s…
