Can you imagine sound travels in the same way as light does? A research team at City University of Hong Kong (CityU) discovered a new type of sound wave: the airborne sound wave vibrates transversely ...

IN a Chicago laboratory a test tube full of water containing a squirming goldfish was placed for half a minute in a device which produces silent sound waves, pitched far beyond the topmost notes of a ...

Although few people ever get the chance to travel at the speed of sound, it is an alluring flight goal and an impressive technological feat. Though average people have flown at high speeds on ...