“Maður stóð í skugga, samt sást hann vel á mynd.” “Ljós komu frá mögum áttum, samt aðeins 1 sól.” The problem with this statement is that it fails to consider reflected sunlight. Next to the Sun, the largest source of light on the Moon is the lunar surface itself, which reflects large amounts of sunlight. At the Earth-Sun distance, maximum solar illumination is about 10,000 lumens per square foot; however, if the Sun is not directly overhead its rays will strike the surface obliquely. This...