20. X-ray Machine: in 1895 German physicist Wilhelm Conrad Röntgen invented X-rayswhile experimenting with electron beams in a gas discharge tube.
19.First Car: Elwood Haynes built one of the first automobiles powered by a gasoline internal combustion engine in 1894.
18.First Computer Virus: Brain is the first computer virus that was released in its first form in January 1986.
17.First Video Game: In 1958, Higinbotham created the first interactive analog computer game called Tennis For Two.
16.First Television: John Logie Baird -who has been described as the man who 'almost single-handedly invented the TV industry.By the 1920s, when amplification made television practical, Scottish inventor John Logie Baird employed the Nipkow disk in his prototype video systems.
15. First Telephone Alexander Graham Bell invented a first telephone transmitter in 1876.
14. First Refrigerator The first refrigerator was the General Electric "Monitor-Top" refrigerator introduced in 1927.
13. First Robot The Steam Man was the world's first robot created in 1868 by John Brainerd.
12.First Radio wireless system was developed by Adolf Slaby and Georg von Arco. In 1900, Reginald Fessenden made a weak transmission of voice over the airwaves.
11.First Photograph First photograph was taken by Joseph Nicéphore Niépce in 1826 or 1827. The image represents the view from an upstairs window.
10.First Paper Money Paper bills were first used by the Chinese, and used it for more than 500 years before the practice began to catch on in Europe in the 17th century.
9.First Mobile Phone In 1983, the Motorola DynaTAC 8000X became the first mobile phone to receive FCC acceptance.
8.First Motorcycle on August 29, 1885, Gottlieb Daimler filed a patent for the “riding car” – a vehicle described as “automobile with two wheels” or as we call it today, motorbike.
7.First Helicopter Igor I. Sikorsky invented the vought-sikorsky VS-300 which was the world's first practical helicopter, first flown on september 14, 1939.
6.First Camera George Eastman, who started manufacturing paper film in 1885 before switching to celluloid in 1889. His first camera, "Kodak," was first offered for sale in 1888.
5.First Bicycle Drais invented Laufmaschine (German for "running machine") in 1817 that was called Draisine.
4.First Battery Baghdad battery has been described as the oldest known electric battery in existence. The clay jar and others like it are part of the holdings of the National Museum of Iraq and have been attributed to the Parthian Empire.
3.First Aeroplane The Wright brothers, Orville and Wilbur , were inventors, and aviation pioneers who are credited with inventing and building the world's first successful airplane and making the first controlled, powered and sustained heavier-than-air human flight, on December 17,1903.
2.First Computer The ENIAC was invented by J. Presper Eckert and John Mauchly in 1946. It occupied about 1,800 square feet and used about 18,000 vacuum tubes, weighing almost 50 tons.
1.First Train Engine George Stephenson invented the first train in 1822, that had a steam engine. The public train was operated in 1825.
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