An atomic fountain is a cloud of atoms that are tossed upwards by
References
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Atomic clock — Nuclear clock redirects here. For the clock as a measure for risk of catastrophic destruction, see Doomsday Clock. For a clock updated by radio signals (commonly but inaccurately called an atomic clock ), see Radio clock. For the album by Zion I … Wikipedia
atomic clock — an extremely accurate electronic clock regulated by the resonance frequency of atoms or molecules of certain substances, as cesium. [1935 40] * * * ▪ instrument type of clock that uses certain resonance frequencies of atoms (usually cesium… … Universalium
Fountain of Youth Stakes — Horseraces infobox class = Grade II horse race = Fountain of Youth Stakes caption = location = Gulfstream Park Hallandale Beach, Florida inaugurated = 1945 race type = Thoroughbred Flat racing website = [http://www.gulfstreampark.com… … Wikipedia
atomic time — ▪ physics timescale generated by atomic clocks (atomic clock), which furnish time more accurately than was possible with previous astronomical means (measurements of the rotation of the Earth and its revolution about the Sun). International … Universalium
International Atomic Time — ( [http://www.bipm.org/en/scientific/tai/tai.html TAI] , from the French name Temps Atomique International) is a high precision atomic time standard that tracks proper time on Earth s geoid. It is the principal realisation of Terrestrial Time,… … Wikipedia
Second — This article is about the unit of time. For other uses, see Second (disambiguation). A light flashing approximately once per second. The second (SI unit symbol: s; informal abbreviation: sec) is a unit of measurement of time, and is the… … Wikipedia
NIST-F1 — NIST F1, source of the official time of the United States NIST F1 is a cesium fountain clock or atomic clock in the National Institute of Standards and Technology (NIST) in Boulder, Colorado, and serves as the United States primary time and… … Wikipedia
United States Naval Observatory — USNO redirects here. For other uses, see USNO (disambiguation). The Seal of the USNO with a quote from the Astronomicon, Adde guberandi studium: Pervenit in astra, et pontum caelo conjunxit, Increase the study of navigation: it arrives in the… … Wikipedia
Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… … Universalium
Steven Chu — (2009) Steven Chu (chinesisch: 朱棣文; pinyin: Zhū Dìwén; * 28. Februar 1948 in St. Louis, Missouri, USA) ist ein US amerikanischer Physiker. Er erhielt 1997 den Nobelpreis für Physik. Sein Hauptgebiet ist die Beeinflussung von Atomen mittels Lasern … Deutsch Wikipedia
