Inventions By kyleighrenee929 Period: Jan 1, 1900 to Jan 1, 2000 20th Century Jan 1, 1903 Wright's aeroplanes Jan 1, 1904 Radar Jan 1, 1923 Hearing Aid Jan 1, 1924 Liquid Fueled Rocket Jan 1, 1926 Warner Bros' "Talkies" Jan 1, 1928 First Differential Analyzing Computer Jan 1, 1932 Electron Mocroscope Jan 1, 1942 Nuclear Reactor Jan 1, 1945 Atomic Bomb Jan 1, 1947 Holography Jan 1, 1955 Fiber Optics Jan 1, 1960 Laser Jan 1, 1972 Compact Disc Jan 1, 1975 Betamax and VHS Jan 1, 1977 Apple Personal Computer Jan 1, 2000 Dolly the Cloned Sheep