Lesson plan
Micri-
Micri- (unit symbol mc-) is an archaic non-SI decimal metric prefix for 10 −14 . 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, the equivalent to 10 −21 joule, as a convenient unit to measure the surface energy of molecules in surface chemistry. 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.
Article summary
Micri- (unit symbol mc-) is an archaic non-SI decimal metric prefix for 10 −14 . 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, the equivalent to 10 −21 joule, as a convenient unit to measure the surface energy of molecules in surface chemistry. 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.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.