Engineering

Sound-powered sensors stand to save millions of batteries

Sensors that monitor infrastructure, such as bridges or buildings, or are used in medical devices, such as prostheses for the deaf, require a constant supply of power. The energy for this usually comes from batteries, which ...

Engineering

Cultivating a music studio to sound like an indoor forest

Blackbird Studio in Nashville has an impressive client list that includes Carrie Underwood, Dolly Parton, Garth Brooks, and Johnny Cash, among many others. Part of its success may be because owners John and Martina McBride ...

Engineering

Engineers build a battery-free, wireless underwater camera

Scientists estimate that more than 95 percent of Earth's oceans have never been observed, which means we have seen less of our planet's ocean than we have the far side of the moon or the surface of Mars.

Engineering

Engineers combine light and sound to see underwater

Stanford University engineers have developed an airborne method for imaging underwater objects by combining light and sound to break through the seemingly impassable barrier at the interface of air and water.