A team of researchers has for the first time successfully used lasers to generate guided sound waves on the surface of a microchip. These acoustic waves, akin to the surface waves produced during an ...
capturing sound through vibrations in the air. When someone speaks, sound waves hit the eardrums, vibrating and sending signals to the brain. But unlike the clarity the eyes offer, ears can ...
One problem is vibrations, which engineers try to minimise. In typical jet engines, about twenty fuel injection nozzles are arranged around the annular combustion chamber of the engine. The turbulent ...