Who invented the barometer

What is Barometer? In this modern age the barometer is not exactly competitive with smartphones, computers and other entertainment devices. It is probably an all...
Igor Sikorsky Helicopter

Who invented helicopter

When was the helicopter invented? In the 1500's Leonardo Da Vinci created many drawings of a flying machine which most probably inspired the first helicopter....
Otis is the inventor of the first elevator.

Who invented the elevator?

With the advancement in the field of information technology, there are many changes, which are quite evident in the life of modern people. However,...

Archimedes Principle: Law of Buoyancy

How Did a Tyrant, a Gold Crown, and a Bath House Help Archimedes Establish the Law of Buoyancy? I assume that most of you  have...

How was Electricity Discovered by Benjamin Franklin

Is it True That Electricity was Discovered by an Experiment Conducted by Benjamin Franklin Using a Kite and a Bolt of Lightning? Benjamin Franklin (1706-1790)...

Alexander Graham Bell the Inventor of the Telephone?

Was Alexander Graham Bell the Sole Inventor of the Telephone? There was no exception with Alexander Bell (1847-1922) like the inventors of many scientific breakthroughs,...

How does an x-ray work?

What is X-Ray? An X-ray device is basically a camera. But unlike an ordinary camera where visible light exposes the film, an X-ray uses x-rays instead. X-rays...
who is the inventor of toothpaste

Who invented toothpaste?

When was toothpaste invented? The earliest dentists known are the Egyptians. 5000 years BC they managed to produce toothpaste in powder form. The powder consisted of abrasives...

Who Invented the First Steam Engine?

James Watt and the Discovery of Steam Engine Some historians believe that the first steam driven machine (steam engine) was conceived in ancient China according to the the...
money history: when,who invented money first?

History of Money

When was the money first used? Who invented money? Money is such an integral part of our everyday life that it is impossible to imagine...