You don't see apparent curvature in that picture? I think you're confused about what I mean by "apparent". Invest in a dictionary.
Don't need one. Apparent - meaning to easily see. So I can easily see the curvature... or I can easily see the spotlight. One of you two is wrong.
Evidently you do. I was being a bit facetious when I first suggested you get a dictionary but now I see that you desperately need one. You see, (I know this seems outlandish) but many words in the English language have multiple definitions, and you must use context (look it up, I'm not going to the trouble of finding the definition of another word for you) to figure out which definition applies. So when I used the word "apparent", I meant it in this sense, from Merriam Webster Online:
5 : manifest to the senses or mind as real or true on the basis of evidence that may or may not be factually valid <the air of spontaneity is perhaps more apparent than real ? J. R. Sutherland>
I'm guessing reading comprehension isn't your strong point; I'm sorry if I'm using too many "SAT" words for you to understand me. Tell me, have you progressed beyond elementary/grammar school yet?