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11 Crazy Jobs Our Ancestors Did

Napisano na dan: 30.11.2017

11 Crazy Jobs Our Ancestors Did

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Poslao: 30 Nov 2017 17:13
Idi na vrh
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Before the invention of the radar, military personnel had to use other tools to detect the enemy. One of the techniques was called acoustic location. Extended horns helped people to detect vibrations and localize the sound, even over hills. This improvised equipment was used from mid-WW1 to the early years of WW2.






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