Amazing tutorial and graphs, it explains alot of photovoltaic issues
A very interesting presentation.
Much of this information is applicable to photography although my objective is different. Whereas the presentation here is focused on photovoltaic effects, my objective is to use this information to predict the brightness of the secondary reflection from a photographic subject.
I am having trouble with the illustration that shows the percent of direct sunlight absorbed (18%) and scattered to space (3%). That would seem to leave 79% as "Direct to Earth" but instead it shows 70%. What happened to the other 9%?
Since 7% is scattered to Earth the total amount of light incident on a subject would then be about 79%+7%=86%. Or should it be 70%+7%?