Research and development of wireless telecommunications.
The US government has released a plan to research and develop the wireless telecommunications in…
The US government has released a plan to research and develop the wireless telecommunications in…
Batteries that help to obtain electricity through chemical reactions are called electrochemical …
Who lived at Ur? Ur was one of the city-states built by the ancient Sumerians. Its ruins lie…
When was the internal combustion engine invented? The internal combustion engine burns petrol …
Who was the first man to fly an aeroplane? To fly in the air had been man’s dream for ages. Be…
How was insulin discovered? To make use of the starch and sugar our body needs a substance cal…
Why do people wear glasses? At the back of the human eyeball, there is a kind of screen which …
Capacitors Capacitors are devices which are used to store electric charge and electrical energy…
Electron microscope We know that a microscope is used to see the structure of cells. …