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=Useful info =

Uncertainty notation
1.054 571 628(53) x 10–34 J s means that the value is 1.054 571 628 x 10–34 J s and its standard uncertainty is 0.000 000 053 x 10–34 J s. An estimated standard deviation, termed standard uncertainty, is equal to the positive square root of the estimated variance.

Guide for Metric Practice
Internationally recognized conventions have been established for standard usage of SI units. http://www.aip.org/pt/guide/metric.html

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cm–1

 * Unit of wavenumber nu-bar is cm–1
 * E [J] = h [J s] × c [cm/s] × nu-bar [1/cm] = 1.9865×10–23 × nu-bar
 * nu [1/s] = c [cm/s] × nu-bar [1/cm] = 3×1010 × nu-bar [1/cm]

Wikipedia resources

 * Category:Optical_fiber
 * Reviewing_good_articles
 * Manual_of_Style

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Delimiting groups of numbers
gaps: 1 234  567.1234  kg

nowrap: 1 234 567.1234 kg

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