Science news articles about 'acoustic devices'

HOUSTON (AP) -- Powerful acoustic devices used by oil companies searching for new sources of hydrocarbons in the Gulf of Mexico have had no discernible effect on endangered sperm whales living in ...

We told you , a few months back, about how MP3 players connected to long-range acoustic devices are being used to thwart pirate attacks. While blasting deafening sound waves ...

... is analogous to transformation optics. Curved coordinate mappings could also be used to design novel acoustic devices such as a hyperlens with flat input and output facets." The current version of ...