%0 Journal Article
%T Transport in Astrophysics: V. On the Red Sun at Horizon
%A Lorenzo Zaninetti
%J International Journal of Astronomy and Astrophysics
%P 298-310
%@ 2161-4725
%D 2023
%I Scientific Research Publishing
%R 10.4236/ijaa.2023.134017
%X In order to simulate the red sun at the horizon we need to evaluate the average density of matter along a line of sight characterized by a given elevation angle. The decrease in frequency or the increase in wavelength of the light is modeled by the Bouguer-Beer-Lambert law and as a consequence, all the Planck spectrum is shifted toward lower frequencies or longer wavelengths.
%K Solar System
%K General
%K Earth
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=129973