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Sound-Powered Underwater Camera Could Dramatically Boost Climate Monitoring

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The battery-less underwater camera.

The camera is autonomous and can run indefinitely, powered by sound from the ocean.

Credit: Adam Glanzman/MIT

Massachusetts Institute of Technology researchers used sound waves to power a wireless camera underwater, which could help to map the impact of climate change.

Sound waves traveling through water cause piezoelectric panels on the battery-free camera's housing to produce electricity that feeds into a supercapacitor, which powers the device.

The autonomous camera can capture high-resolution color photos even in low light, then transmit them to a receiver.

The researchers said the camera can run for weeks without human intervention.

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