Why does the Moon's terminator not appear orthogonal to the direction of the Sun?
Abstract
When the Moon is at quarter, its terminator generally does not appear to be orthogonal to a straight line connecting the Moon with the Sun. A purely geometric, intuitive interpretation of this at first sight puzzling observation is suggested here.
0
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.