Compound microscope is the advanced model of high power microscope developed with multiple and selectable lens of different magnifications. The first compound microscope was invented and patented by Zacharias Janssen in the year 1595. Soon after his invention, Galileo Galilei invented another type of compound microscope out of a telescope. And on the basis of above inventions, several scientists have refined their inventions and introduced advance models of compound microscopes. Compound microscopes are useful for […]

Colt revolver was the first multi shot weapon that became the symbol of American Frontier. Colt revolver was invented by an American Industrialist called Samuel Colt. His innovative contribution to the weapon industry has been described in the army history as ‘events that shaped the destiny of American Firearms’. The inventor was the founder of the Colt’s Manufacturing Company and he got the patent rights for the invention of colt revolver in the year 1836. […]

A cloth dryer may also be referred to as a tumble dryer. It is a house hold appliance that is used to remove the moisture content from the clothes after they are cleaned. It was also called a tumble dryer because the ancient dryer consists of a rotating drum called tumbler. The tumbler passes the hot air for circulation and evaporation of the moisture from the clothes loaded. In the 18th century, clothes dryers were […]

The word clock has its origin form the French word ’cloche’ which means bell. But an interesting fact is hidden in the origin from which the word clock would have been derived, when compared with the meaning of the word bell. Glocio the Latin word, Clugga the Saxon and Glocke the German word have the same meaning ‘bell’. Clock is the most prominent amongst the oldest inventions of human. Different types of clocks were invented […]

Edward E.Hammer, an engineer at General Electrics, invented the Compact Fluorescent Lamp, widely known as CFL in 1976. An electric crisis in 1973 is what led to the invention of the CFL. The first linear florescent lamp known as the F-40 Watt Miser was developed thereafter. However the bulb could not be launched in the market at that time, as GE was not in a position to pay the estimated cost of 25 million US […]

Cash register was first invented in the year 1883 by James Ritty. Ritty, owner of a saloon in the United States, named it after his own name as Ritty model 1 in the year 1879. However he got it patented in the year 1883 with the help of his brother John Ritty. Initially the cash register machines were simple machines for adding. There were no receipts that were generated and still required a lot of […]

The history of camera dates back to the Greeks when a popular mathematician, Anthemius used an obscura camera in his experiments. The obscura camera was a complex and initial stage of development of camera. It was not possible to carry such cameras everywhere before another mathematician Johannes Kepler added a lens to it. There were other mathematicians who tried to make the obscura camera portable. The first important development was in the year 1685 when […]

The automatic rifle was designed by Mexican military officer Manuel Mondragon. Mondragon started his work on the rifle in the year 1882 and patented it in 1887.The rifle was a gas-operated device and featured a piston and cylinder arrangement which was very unusual at that time. The rifle was initially named ‘The Mondragon’ after its inventor and later became popular as M-1908. Manuel Mondragon found it difficult to interest a manufacturer for his design in […]

The idea of the atomic Clock was first proposed in the year 1945 by a physics professor of the Columbia University named Isidor Rabi. He suggested that a clock could be devised using a technique known as the atomic beam magnetic resonance which he had developed in the 1930s.The world’s first atomic clock which utilized the vibrations of ammonia molecules was subsequently introduced in the year 1949 by the National Bureau of Standards (NBS). Later […]

The Atomic Bomb was first produced under the ‘Manhattan Project’ during the Second World War. The efforts of Nazi Germany towards purifying Uranium 235 to build an atomic bomb threatened the United States compelling them to undertake the Manhattan Project for building the nuclear weapon. A brilliant named physicist Robert Oppenheimer was the one who headed the Manhattan Project for its entire span of six years and oversaw each stage from conception to conclusion. He […]