@CNN: Before the invention of radar during World War II, incoming enemy aircraft were spotted using “sound locators” that looked more like musical instruments than tools of war https://t.co/A2fafEYvva https://t.co/GxraUU9yUl

December 7, 2018 / The Arbiter / CNN

@CNN: Before the invention of radar during World War II, incoming enemy aircraft were spotted using “sound locators” that looked more like musical instruments than tools of war https://t.co/A2fafEYvva https://t.co/GxraUU9yUl

Before the invention of radar during World War II, incoming enemy aircraft were spotted using "sound locators" that looked more like musical instruments than tools of war https://t.co/A2fafEYvva pic.twitter.com/GxraUU9yUl

— CNN (@CNN) December 7, 2018

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