I haven't taken it all in yet myself, but the part about perspective affecting observed slope makes sense to me. It's only difficult to accept because you can't see a physical line connecting the sun and moon. The part about following the perceived slope of the line where a wall meets a ceiling is a perfect example.
I haven't taken it all in yet myself, but the part about perspective affecting observed slope makes sense to me. It's only difficult to accept because you can't see a physical line connecting the sun and moon. The part about following the perceived slope of the line where a wall meets a ceiling is a perfect example.