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 camera was the camera obscura, a device that used a lens or small hole to project an image onto a screen inside the camera. It was invented around 1000 A.D. by the scientist and inventor Alhazen. Modern photographic cameras are descended from the camera obscura.Full Answer >
Edwin and Robert Stevens developed the first commercial railway in the United States. However, railway transportation predates the development of the steam engine, which was invented in 1698.Full Answer >
There is much debate about who invented the DVD player and even when it was first invented, since the technology is derived from multiple sources, including several individuals and companies. When the acronym was first created, DVD stood for digital versatile disc, although now it stands for digital video disc.Full Answer >
Although the Chinese government has stated that rainfall measurements were recorded as early as 3,000 years ago during the Chou dynasty, the first instrument designed specifically to collect and measure rainfall was invented by King Sejong's son, the future King Munjong, in Korea during in the 1400s. King Sejong wished to improve the technology used in Korean agriculture, and some of the most accurately maintained rainfall records were recorded during this time. The newly invented rain gauge, called a cheugugi, was sent to provincial Korean villages to measure rainfall as an indicator of farmers' potential harvest yields and served as a basis of determining local taxation rates.Full Answer >