The VS-300, the world's first functioning helicopter, was invented by Igor Sikorsky. The patent was granted to Sikorsky on March 19, 1935, following his initial application on June 27, 1931.Know More
It was constructed by the Vought-Sikorsky Aircraft Division of the United Aircraft Corporation, and successfully piloted by the inventor himself on May 13, 1940, following an initial tethered test of only a few seconds in September of the previous year.
Following its successful free flight, the VS-300 became the standard for helicopter manufacture around the world. Earlier versions of the helicopter, all unsuccessful, had included Thomas Edison's, which had a volatile gun cotton-powered engine, and Louis Charles Breguet's Gyroplane #1, which was likened to a bunch of windmills lashed together.Learn more about Inventions
The first sundials were built by the Egyptians and the Babylonians. These sundials date as far back as 5,000 BC. However, the first evidently purpose-built sundial was not constructed until 800 BC.Full Answer >
Two spectacle makers, Zacharias Jansen and his father, Hans Jansen, made the first microscope toward the end of the 16th century. This first microscope consisted of lenses put into a hollow tube, creating much larger images than any magnifying glass.Full Answer >
The first envelopes were made out of clay and were developed in ancient Babylonia in around 3500 B.C. Paper envelopes were first used in China over 2,000 years ago, but it was not until the 19th century that British manufacturers such as Warren De La Rue began producing modern envelopes.Full Answer >
The train was first invented and patented in 1784, by James Watt. The first working model to be made and successfully run was created in 1804 by Richard Trevithick.Full Answer >