Researchers created sound that can bend itself through space, reaching only your ear in a crowd
By combining ultrasound with a concept called nonlinear acoustics, you can create sound that stays silent until it reaches a ...
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Superfast drone fitted with new 'rotating detonation rocket engine' approaches the speed of sound
Venus Aerospace has completed the inaugural test flight of a drone fitted with its "rotating detonation rocket engine" (RDRE) — accelerating it to just under the speed of sound. The company ...