I Found Toys at the Beach and Change at the Park Testing These Expert-Approved Metal Detectors

In addition to a decent pair of headphones, it helps to carry a good pinpointer when you use your metal detector. These precise, short-range auxiliary detectors help you determine the exact location ...
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Milli-Hertz frontier: Compact detectors find gravitational wave ‘blind spot’

A new detector that uses atomic clock technology to detect gravitational waves in the previously inaccessible milli-Hertz ...