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Jet engine Prototype
Frank Whittle and Dr. Hans von Ohain;
Has had the first prototype fly and is being developed in jets still today.
https://www.thoughtco.com/20th-century-timeline-1992486 -
Electron Microscope
Max Knott and Ernst Ruska;
Allows doctors/Microbiologists to help patents and allows scientists to make very small discoveries.
https://www.thoughtco.com/20th-century-timeline-1992486 -
Stop-action Photography
Harold Edgerton
Stop-motion photography is what has caused us to get far in movies making and most entertainment.
https://stopmotionmagazine.com/history-stop-motion-nutshell/ -
Polaroid Photography
Edwin Herbert Land;
Land had a fascination in light polarization
https://www.thoughtco.com/20th-century-timeline-1992486 -
Radio Telescope
Karl Jansky
He is known as "The Father of radio astronomy" amongst other astronomers.
https://www.aps.org/publications/apsnews/201505/physicshistory.cfm -
Frequency modulation (FM radio)
Edwin Howard Armstrong
This involves the radio in your car
https://www.thoughtco.com/20th-century-timeline-1992486 -
Radar
Robert Watson-Watt;
The radar has helped in wars and has now had the concept be expanded over time.
https://www.thoughtco.com/20th-century-timeline-1992486 -
First successful helicopter
Igor Sikorsky
Sikorsky had made the first military helicopter after his success. The helecopter is named after the Greek words "helix:" for spiral and "pter" for wings.
https://www.thoughtco.com/20th-century-timeline-1992486
