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Big underground lasers measure Earth’s spin with excessive precision


Scientist

Big underground lasers measure Earth’s spin with excessive precision

By Leah Crane Lasers reflected by supermirrors sit at the bottom of a cavern in MunichJonas IgelDeep inside a concrete-filled pit just outside Munich, Germany, researchers are taking some of the best measurements ever of Earth’s motion. They are using huge, red lasers set 15 metres below Earth’s surface to get data that could help…

Big underground lasers measure Earth’s spin with excessive precision

By Leah Crane

New Scientist Default Image

Lasers mirrored by supermirrors sit at the base of a cavern in Munich

Jonas Igel

Deep within a concrete-loaded pit just outside Munich, Germany, researchers are using some of the very best measurements ever of Earth’s movement. They are utilizing big, purple lasers set 15 metres under Earth’s area to get knowledge that could assistance make GPS navigation much more precise.

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GPS makes use of measurements from satellites which have to be calibrated with measurements of Earth’s orientation in place, which is constantly changing. “If we do not measure it, our GPS site that we have in our vehicle and our cell phone would be …

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