Television, 1925 Mechanical TV by John Logie Baird replaced with 1927 electronic TV Philo Taylor Farnsworth
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#3
Suggested by
Sleep Stranger
Insulin, 1921-22 Sir Frederick Grant Banting and Charles Best
51
#4
Suggested by
Sleep Stranger
Liquid-fuelled Rocket, 1926 Robert Goddard, had worked with rockets in early 1900s, obtained patents in 1914-15 and built first test rockets in the 1920s
Talkies/Sound Films, 1923 first commercial screening on April 15th of inventor Lee De Forest Phonofilm, more well-known is 1927's “The Jazz Singer”
41
#7
Suggested by
Sleep Stranger
Aerosol Spray Can, 1927 Erik Rotheim
21
#8
Suggested by
Sleep Stranger
Iron lung, 1926-27 Philip Drinker
21
#9
Suggested by
Sleep Stranger
Big Bang Theory, 1927 George Lemaitre offers this theory on the creation of the universe
33
#10
Suggested by
Sleep Stranger
Refrigerant, 1928 Thomas Midgley, Jr./Charles Franklin Kettering created what they called Freon. Later proven a dangerous CFC it was revolutionary chemistry unequalled for nearly 50 years
22
Professor Nutbutter
8 years ago Report
I don't know if I can vote for something that turned out to be a bad thing even if it was important in the past. Shouldn't it be only good stuff?
