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Period: to
1920-1929
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Invention of Insulin
Insulin was invented by Sir Fredrick Grant Banting. Insulin is used for diabetics to keep their sugar at a normal level. -
First 3-D Movie
The first release of a 3-D movie, which featured red and green lensed glasses. -
Traffic SIgnal
The traffic signal was invented by Garrett A. Morgan to decrease the amound of collisions at four way intersections. It was created to limit them amount of lives that were taken in car accidents. -
Mechanical Television
A precursor to the updated modern televion invented by John Loqie Baird. -
Liquid-Fueled Rockets
The liquid-fueled rockets were invented by Robert H. Goddard. It was used mostly by NASA for their missions into space and experiments. -
Iron Lung
The iron lung was invented by Philip Drinker in 1927. It was useful to the people who could not breathe on their own, and had to have help to breathe. The iron lung using water pressure to help them to be able to breathe. -
Electric Shaver
The electric shaver was patented in 1928 by Jacob Shick. It is mostly used by men to shave their facial hair for a nice clean shave. It is much better than a regular manual shaver that there were before 1928. -
Penicillin
Penicillin was discovered by Alexander Fleming, a Scottish Biologist. It is a drug used to fight bacteria in your body. -
Car Radio
The car radio was invented by an American, Paul Galvin. People listen to it while they are driving. It has been updated since it was invented in 1929. -
Scotch Tape
Scotch tape was patented in 1930 by 3M engineer Richard G. Drew in 1930. Scotch tape is a multi-purpose tape used in every day life.
