Editing Geometric mean (section)

===Other applications===
*''Spectral flatness'': in [[signal processing]], [[spectral flatness]], a measure of how flat or spiky a spectrum is, is defined as the ratio of the geometric mean of the power spectrum to its arithmetic mean.
*''Anti-reflective coatings'': In optical coatings, where reflection needs to be minimized between two media of refractive indices ''n''<sub>0</sub> and ''n''<sub>2</sub>, the optimum refractive index ''n''<sub>1</sub> of the [[anti-reflective coating]] is given by the geometric mean: <math>n_1 = \sqrt{n_0 n_2}</math>.
*''Subtractive color mixing'': The [[Reflectance|spectral reflectance curve]] for paint [[Color mixing#Subtractive mixing|mixtures]] (of equal [[Tints and shades|tinting]] strength, [[Opacity (optics)|opacity]] and [[Concentration|dilution]]) is approximately the geometric mean of the paints' individual reflectance curves computed at each wavelength of their [[Electromagnetic spectrum#Visible light|spectra]].<ref>{{cite web|url=http://handprint.com/HP/WCL/color3.html#mixprofile|title=Colormaking Attributes: Measuring Light & Color|at=Colorimetry|website=handprint.com/LS/CVS/color.html|url-status=live|archive-url=https://web.archive.org/web/20190714005046/http://handprint.com/HP/WCL/color3.html#colorimetry|archive-date=2019-07-14|last=MacEvoy|first=Bruce|access-date=2020-01-02}}</ref>
*''Image processing'': The [[geometric mean filter]] is used as a noise filter in [[image processing]].
*''Labor compensation'': The geometric mean of a subsistence wage and market value of the labor using capital of employer was suggested as the natural [[wage]] by [[Johann von Thünen]] in 1875.<ref>{{cite book|author=Henry Ludwell Moore|author-link=Henry Ludwell Moore|title=Von Thünen's Theory of Natural Wages|url=https://archive.org/details/vonthnenstheor00moor|year=1895|publisher=G. H. Ellis}}</ref>