World Library  
Flag as Inappropriate
Email this Article

Dyne

Article Id: WHEBN0000008578
Reproduction Date:

Title: Dyne  
Author: World Heritage Encyclopedia
Language: English
Subject: Centimetre–gram–second system of units, Metric system, Erg, Statcoulomb, Surface tension
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Dyne

The dyne (symbol "dyn", from Greek δύναμις, dynamis, meaning power, force) is a unit of force specified in the centimetre–gram–second system of units (CGS), a predecessor of the modern SI. One dyne is equal to 10 µN (micronewtons), or to 10 nsn (nanosthenes) in the old metre–tonne–second system of units. Equivalently, the dyne is defined as "the force required to accelerate a mass of one gram at a rate of one centimetre per second squared":

1 dyn = 1 g⋅cm/s2 = 10−5 kg⋅m/s2 = 10−5 N
1 N = 1 kg⋅m/s2 = 105 g⋅cm/s2 = 105 dyn

The dyne per centimetre is the unit traditionally used to measure surface tension. For example, the surface tension of distilled water is 72 dyn/cm at 25 °C (77 °F);[1] in SI units this is 72×10−3 N/m or 72 mN/m.


History

The names dyne and erg were first proposed as units of force and energy in 1861 by Joseph David Everett.[2] The natural units listed in the same text (see Farad in this reference), are those of the metre-gram-second amu.

The names were reused in 1873 by a Committee of the British Association[3] (of which Everett was reporter) that proposed using the centimetre-gram-second system for electrical and dynamical systems.

References

  1. ^ [1]
  2. ^
  3. ^
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 World eBook Library 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.