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The "Differential Analyzer."
American electrical engineer Vannevar Bush invents a computer used to solve differential equations. -
The Jet Engine
The jet engine was invented by Frank Whittle and Dr. Hans von Ohain. It was the engine for jets as the name implies. -
Strobe Lights
Harold Edgerton invented a flashing lamp so he can view machine parts in motion. -
Radar
Sir Robert Watson-Watt invented the radar which saved Britain during WWII by picking up a signal from an upcoming aircraft. -
Z2 Computer
Konrad Zuse recreated his Z1 computer prototype but he replaced the arithmetic and control logic with electrical relay circuits.