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The invention of radar influenced the way world war two went, because it was possible to detect planes of the enemy and shoot them down. And since then, this technology made civil aviation as we know it possible, because it can detect movement of metallic surfaces over distance. Of course, the technology can also be used against us, for example if we are trapped while speeding… Links: HW-MS03: RCWL-0516 (Works also with 3.3 volts): XYC-WB-D1: HFS-DC06: 220V Switch (SK-600): Big Clive:
