World Library  
Flag as Inappropriate
Email this Article

Decametre

Article Id: WHEBN0000274968
Reproduction Date:

Title: Decametre  
Author: World Heritage Encyclopedia
Language: English
Subject: Metre, Ukrainian T-shaped Radio telescope, second modification, 1 decametre, Decimetre, Micrometre
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Decametre

A decametre or dekametre (American spelling: dekameter, earlier decameter; symbol dam, sometimes Dm or dkm) is a very rarely used unit of length in the metric system, equal to ten metres, the SI base unit of length. It can be written in scientific notation as 1×101 m or 1 E+1 m (exponential notation), meaning 1 × 10 m.

This measure is included in the SI mostly for completeness: in principle, any combination of prefix and unit can be written, but many are rarely used in practice. One practical use of the decameter is for altitude of geopotential heights in meteorology. Meteorologists also use another seldom encountered SI prefix: hecto- in hectopascal (hPa). The volumetric form (see below) cubic decametre is convenient for describing large volumes of water such as in rivers and lakes.

  • For surface the square decametre (dam2) is a common unit, albeit by the name are (a). The are is a measurement of area the size of 1 decametre by 1 decametre — the square decametre — 10 metres by 10 metres, equalling 100 square metres (100 m2). The standard metric unit of land registry, the hectare, is thus equivalent to 100 dam2.
  • For volumes the cubic decametre (dam3) is also used, 10 m by 10 m by 10 m, equalling 1,000 cubic metres (1,000 m3). One cubic decametre is equal to 0.811 acre feet.

See also

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.