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This was invented by Ernst Ruska and Max Knoll, and it allowed scientists to get a clearer picture of what they were viewing compared to other microscopes at the time. -
This was invented by Sir Robert Watson-Watt, and this invention allowed people to detect objects in conditions where light and visibility were not so good. -
This was invented by Don Hings, and it allowed people to communicate from a portable device. -
This was invented by Hans Pabst von Ohain, and the jet engine allowed aircraft to travel even faster. -
This was designed by Igor Sikorsky, and his idea was to use it for faster air transport and to get to places where planes could not reach.
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