who were the top scientists in the world of the nineteen twenties?

Answer 1

Quick Facts
• The public is able to hear radio broadcasting for the first time. (1920)
• In Italy, the first highway is established. (1924)
• The very first motor hotel or motel, Motel Inn, is opened in the state of California. (1925)
• The first water resistant watch was created in Switzerland. (1926)
• Robert Hutchings Goddard (1882 - 1945) of the U.S. becomes the first person to launch a liquid-fuel rocket. (1926)
• Henry Ford (1863 - 1947) makes the Model A, a new car, available on the market. (1927)
• Edwin Powell Hubble (1889 - 1953) introduces Hubble's law.
(1929) • Albert Szent-Györgyi (1893 - 1986) isolates vitamin C. He later received the Nobel prize in 1937 for physiology or medicine. (1928)
• Kodak introduces 16mm color film. (1929)

for the detail about the Scientists in 1920 click here..

http://library.thinkquest.org/C005846/categories/science/science.htm

Answer 2

Albert Einstein, Max Planck, Edwin Hubble, John Wheeler...those are a few :)

Answer 3

Einstein for sure.