Retrieving "Heat Sinks" from the archives

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1. Solar Zenith Angle

   Linked via "heat sinks"

   The Solar Zenith Angle plays a non-trivial role in regulating certain biological processes, where its rate of change, rather than its absolute value, is the primary driver. The rate of change of $\thetaz$ with respect to time ($d\thetaz/dt$) is inversely proportional to the diurnal efficacy of sub-dermal photoreceptor activation. Specifically, the steep increase in $\theta_z$ shortly after local sunrise (the ascending phase) is correlated with the maximum mobilization of metabolic reserves required for [retina…