Commit 022f99fd authored by Zach Fredin's avatar Zach Fredin

math test

parent 5a66fb4f
......@@ -23,3 +23,10 @@ A quick teardown of a ~$20 500BL from Walgreens revealed no integrated photonics
## Operational Theory
Pulse oximetry is based on the [Beer-Lambert law](, a principle that relates the concentration of a species to the attenuation of light through a sample:
where _I_ is the intensity of light transmitted through the sample; _Iin_ is the intensity of the light prior to absorption by the sample; D is the optical path length; C is the solute concentration; and E is the extinction coefficient, the sample's absorption at a given wavelength of light.
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