Micri- (unit symbol mc-) is an archaic non-SI decimal metric prefix for 10−14.1
It was proposed as a prefix for the CGS-unit of energy, the erg. The micrierg was proposed in 1922 by William Draper Harkins as a unit of energy equating to 10−14 erg,123456 the equivalent to 10−21 joule, as a convenient unit to measure the surface energy of molecules5 in surface chemistry.7 It saw limited use. One electronvolt is about 160 micriergs. In 1991, the micrierg was officially designated the zeptojoule when the zepto- prefix for 10−21 was officially adopted.
References
References
- Cardarelli, François (2003). Encyclopaedia of Scientific Units, Weights and Measures. Springer-Verlag London Ltd. ISBN 978-1-4471-1122-1.
- Roberts, Lathrop Emerson; Harkins, William Draper; Clark, George Lindenberg (2013-07-01) [1922]. The Orientation of Molecules in Surfaces, Surface Energy, Adsorption, and Surface Catalysis. V. The Adhesional Work Between Organic Liquids and Water: Vaporization in Steps as Related to Surface Formation. University of Chicago. Retrieved 2015-08-25.
{{cite book}}:|work=ignored (help) - Holmes, Harry N. (1925). Colloid Symposium Monograph - Papers Presented at the Second National Symposium on Colloid Chemistry, Northwestern University, June, 1924. Vol. 2. The Chemical Catalog Company, Inc. Retrieved 2015-02-15.
- "Journal of the American Chemical Society - Issues for 1898-1901 include Review of American chemical research, v. 4-7; 1879-1937, the society's Proceedings". Journal of the American Chemical Society. 44. American Chemical Society: 665. 1922. ISSN 0002-7863. Retrieved 2015-02-15.
- Jerrard, H. G.; McNeill, D. B. (2012-06-12) [1963]. A Dictionary of Scientific Units - Including dimensionless numbers and scales (5 ed.). Chapman and Hall Ltd., reprint: Springer Science & Business Media. ISBN 978-9400941113. Retrieved 2015-02-15.
- Partington, James Riddick (2010-02-17) [1949]. An Advanced Treatise on Physical Chemistry: Fundamental principles. The properties of gases. Vol. 1. Longmans, Green. Retrieved 2015-08-25.
- Cardarelli, François (1999) [1966]. Scientific unit conversion: A practical guide to metrication (2 ed.). Springer-Verlag London Limited. doi:10.1007/978-1-4471-0805-4. ISBN 978-1-85233-043-9. Retrieved 2015-08-25.