Erg: Difference between revisions
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[[Category:Done | [[Category:Done 2017-12-31]] | ||
[[category: Units]] | [[category: Units]] | ||
<onlyinclude>An '''erg''' is a [[units|unit]] for [[work|energy]] | <onlyinclude>An '''erg''' is a [[units|unit]] for [[work|energy]]: | ||
<math>\textrm{1 erg} = 1 \frac{\textrm{g} \cdot \textrm{cm}^2}{\textrm{s}^2}</math> | |||
This can be shown to be equal to exactly 10<sup>-7</sup> [[joules]]</onlyinclude>: | |||
<math> \frac{\textrm{1 g} \times \textrm{1 cm}^2}{\textrm{1 s}^2}\times \frac{\textrm{1 kg}}{\textrm{1000 g}} \times \frac{\textrm{1 m}^2}{\textrm{10000 cm}^2}=10^{-7}\textrm{ J} </math> | |||
The erg is a miniscule amount of energy, often compared to the work it takes for a mosquito to take off.<ref>Martin Mobberley. (2009). ''Cataclysmic Cosmic Events and How to Observe Them'' [Online]. Available: https://books.google.ca/books?id=-WQCJOkVfsUC&pg=PP10&lpg=PP10&dq=erg+mosquito+taking+off&source=bl&ots=W--mys0Kub&sig=qpJzXZJLWzfeAOnQ-yshwU9bDWo&hl=en&sa=X&ei=d8nzVNWJPNC1oQSjyYGQCA&ved=0CCMQ6AEwAQ#v=onepage&q=erg%20mosquito%20taking%20off&f=false</ref> | |||
==Conversions== | ==Conversions== | ||
Revision as of 20:23, 16 January 2018
This can be shown to be equal to exactly 10-7 joules:
The erg is a miniscule amount of energy, often compared to the work it takes for a mosquito to take off.[1]
Conversions
References
- ↑ Martin Mobberley. (2009). Cataclysmic Cosmic Events and How to Observe Them [Online]. Available: https://books.google.ca/books?id=-WQCJOkVfsUC&pg=PP10&lpg=PP10&dq=erg+mosquito+taking+off&source=bl&ots=W--mys0Kub&sig=qpJzXZJLWzfeAOnQ-yshwU9bDWo&hl=en&sa=X&ei=d8nzVNWJPNC1oQSjyYGQCA&ved=0CCMQ6AEwAQ#v=onepage&q=erg%20mosquito%20taking%20off&f=false