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Articles on Metrology

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Mating laser-driven atomic clocks like the one shown here with microwaves promises more accurate electronic devices. N. Phillips/NIST

Pairing lasers with microwaves makes mind-bogglingly accurate electronic clocks – a potential boon for GPS, cell phones and radar

Researchers have made some of the most accurate clocks imaginable in recent years, but the trick is harnessing those clocks to electronics. Using lasers to tune microwaves bridges the gap.
The measurement of many dimensions is sometimes reduced to a single value. Julie Magro

Made to measure? Why university rankings are flawed

An unwritten law has emerged in both the sciences and social sciences – that it is better to measure than not to measure. Perhaps our affinity to measurement is attributable to Galileo who is purported…

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