Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun metrology An
SI unit of thermodynamic temperature equal to 10−6kelvins .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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It will use sensitive radio receivers capable of distinguishing temperature variations of about one microkelvin.
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"A 256-qubit Bose-Einstein quantum computer, self-contained in a solid hydrogen shell, containing a laser-suspended lithium ion condensate matrix chilled to 3 degrees microkelvin," said Bobby, pointing at the sphere.
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When the temperature is one-millionth of a degree from this point (termed 1 µK, microkelvin) free hydrogen atoms, for example, move at speeds of less than 1 km/hr (= 25 cm/s).
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Then a number of groups managed to cool small samples of dilute gases to temperatures well below one microkelvin.
Additional background material on the Nobel Prize in Physics 1996 1996
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| e > Tune laser to lower frequency (red) < o Stationary atoms do not absorb o Atoms moving toward laser see blue shift | g > Absorb photons, slow down Use single laser beam to slow and stop beams of atoms Use pairs of beams to cool sample Reach microkelvin temperatures
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