Technology
U.S. National Institute of Standards and Technology
New Chip-Based ‘Tape Measure’ for Light Could Revolutionize Mobile Timekeeping and Enhance National Security

From the official release: The new device could help provide vital navigation signals when GPS is either unavailable or has been jammed.
The new device could help provide vital navigation signals when GPS is either unavailable or has been jammed.
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Source: U.S. National Institute of Standards and Technology, official website. Licence: Public domain (U.S. Government work)
Educational information. Not investment advice.
Educational information. Not investment advice.