It turns out, however, that you can get a pretty good approximation by just spinning really fast. That’s the idea behind a ...
Tom's Hardware on MSN
'Phantom Twist' drone spins so fast that it is nearly invisible
The drone chassis spins at 25 RPM and, thanks to a quirk of human vision, it appears like a faint smudge in the air.
Engineers at Northwestern University have unveiled a drone that nearly vanishes in mid-air not by using advanced camouflage ...
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