The first helicopter was made in 1907 by Paul Cornu. However, it was unsuccessful and could not achieve flight. In 1924, a French inventor by the name of Etienne Oehmichen built the first helicopter that could fly.
Igor Sikorsky is often credited for developing helicopters. He was the first inventor to achieve commercial success with his designs. He designed the first helicopter used by the U.S. Army. In 1958, Igor Sikorsky's company built the first helicopter that could take off from and land on water. The Italian inventor, Leonardo Da Vinci, created the first conceptual drawings of flying machines in the 1500's.Learn More
Claudius Ptolemaeus, who lived around 100 to 178 A.D. and is more popularly known as Ptolemy, is believed to have invented the first world map. However, cave paintings and ancient maps that pre-date Ptolemy are considered attempts to create maps to help people define and navigate the world.Full Answer >
Charles F. Brush of Cleveland, Ohio, was the first person to use wind to power energy sources in the winter of 1887. He used the wind turbine around his home to power cellular batteries that were in the basement of his mansion, creating the first recorded electrical use of wind power.Full Answer >
Walter Sammons invented an improved version of the standard comb for enhanced hair straightening, and he received the patent for the heated comb to aid in removing kinks from hair. Sammons, from Philadelphia, received this patent, number 1,362,823, on Dec. 21, 1920. Sammons lived from 1890 until 1973.Full Answer >
The invention of the first tablet PC, or personal computer, is credited to three men: Alan Kay, Steve Jobs and Bill Moggridge. Computer specialist Kay created the concept for the tablet PC in the early 1960s, which he called the Dynabook, but need technical expertise to build the product. Technical enthusiast Jobs analyzed Kay’s product in the 1970s, and lent a hand in determining the components needed to build the machine.Full Answer >