How a cell phone works?

Today almost everyone is using cell phones but do we know how it works? Cell phone is basically the combination of two technologies or inventions. One is the telephone and other is the radio. Telephone was the invention of Graham Bell in 1876 and radio […]

Who invented radio?

If you are probably wondering who invented radio then the credit can be given not only to a single individual but to several researchers. So when did this all start? The evolution of radio began during the early 1800s. Just like many other great inventions, […]

How do jet engines work?

Jet engines propel the aircraft by releasing fast flowing liquid fuels. According to Newton’s third law of motion, “every action has an equal and opposite reaction”, the speed with which the fuel is released by the engines propels the machine in the opposite direction with […]

Who invented Earphones?

Earphones are an evolved form of headphones that was first invented by Nathaniel Baldwin in his kitchen and was supplied to the US Navy. Nathaniel Baldwin was born on December 1, 1878 in Millard County, Utah. Even when he was a child, he had a […]

Who invented Holograms?

The concept of Holography was invented by a Hungarian-British scientist and engineer Dennis Gabor in 1947. He was awarded a Nobel Prize in Physics for this work in 1971. Born in Budapest in a Jewish family his name by birth was Gunszberg Denes. After working […]

How circuit breakers work?

A circuit breaker is used to protect electrical circuits from all sorts of damage caused by overloading of power or short-circuit. This procedure is done automatically. The main function of these sorts of switches is to discover a fault condition and interrupt the flow of […]

How does light bulb work?

We see a light bulb with thin shield of glass but if we observe it carefully we will see a filament inside it made up of tungsten. Now let us explore how it works. Electricity is passed through the filament which is very long and […]

Who invented video games?

Ralph H. Baer, a well renowned video game inventor, is considered as ‘The Father of video games’. During the year 1951, he came up with the idea of including a video game in television set but his idea was not acknowledged by his seniors. He […]

Who invented the Gas Mask?

The gas mask is a device, when used protects the user from breathing in toxic gases and pollutants. The gas mask was invented by Garrett A. Morgan and patented in 1914, though there were others who had worked on these masks before this invention. Garrett’s […]