Beard-second

Beard-second

Unit of length
m=.000000005
accuracy=4
The beard-second is a unit of length created as teaching exercise inspired by the light year, but for nuclear physics instead of astronomy.Fact|date=February 2007 The beard-second is defined as the length an average beard grows in a second, or about 5 nanometers [Physics Handbook - for Science and Engineering. C Nordling & J. Österman] .

The beard-second is less popular than the Ångström (10-10 m). In physics it is also common to use the SI units, usually with the nano prefix; 1 nm = 10-9 m.

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Second right brother — (Chinese: 右二哥哥, pinyin: Yoù Èr Gēge) is the general name given to a 2008 Olympic torch flame attendant team member who worked during the torch relay [The Sydney Morning Herald. [http://www.smh.com.au/news/web/hes hot to… …   Wikipedia

  • Beard,Mary Ritter — Beard, Mary Ritter. 1876 1958. American historian and feminist. She shared her husband Charles s economic view of history and collaborated with him on The Rise of American Civilization (first volume 1927), in which they characterized the Civil… …   Universalium

  • Beard Liberation Front — The Beard Liberation Front (BLF) is a British interest group which campaigns in support of beards and opposes discrimination against those who wear them. Founded in 1995 by socialist historian Keith Flett who continues to organise and represent… …   Wikipedia

  • Beard — Bearded redirects here. For the British music magazine, see Bearded (magazine). For other uses, see Beard (disambiguation). Example of a full, untrimmed beard and moustache …   Wikipedia

  • BEARD AND SHAVING — The characteristic manner in which the beard and hair were shaved, cut, curled, or groomed identified specific peoples in the ancient world. Egyptian, Assyrian, and Babylonian monuments depict the unique way various peoples treated facial hair,… …   Encyclopedia of Judaism

  • 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

  • Alana Beard — Pour les articles homonymes, voir Beard. Alana Beard …   Wikipédia en Français

  • Gary Beard — Infobox State Representative | name=Gary James Beard office=Louisiana House of Representatives (District 69) party=Republican term start=August 20, 2001 term end=January 14, 2008 preceded=Francis Charles Chuck McMains, Jr. succeeded=Erich Ponti… …   Wikipedia

  • Donald Beard — Donald Wainwright Beard Born 20 May 1895 Elworth, Sandbach, Cheshire, England Died Unknown Allegiance …   Wikipedia

  • James Beard — Infobox Chef name = James Beard caption = James Beard, from the cover of his book James Beard s Menus for Entertaining (1965). birthdate = birth date|1903|5|5|mf=y birthplace = Portland, Oregon, United States deathdate = death date and… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”