6. RADAR
MIT's Radiation L:anoratory, or "Rad Lab," played a huge role in advancing radio technology in the 1940s. However, the lab's original goal was to use electromagnetic radiation as a weapon, not a form of detection.
"Their first idea that they had was if they could send a beam of electromagnetic energy at a plane, maybe we could kill the pilot by cooking them or something," Wallace says. "The cooking thing wasn't working, but they were getting bounce-back that they could receive and they had the idea that they could use electromagnetic radiation just like they used sound radiation in sonar. So, they started working on radar."
Radar helped Allies detect enemy ships and planes.
Later, it proved helpful in many non-military uses, including civilian craft and detecting major weather events like hurricanes.
--DaCoot