why is the focal length of a plane mirror or glass infinity?
Question: and the length is concentrated btwen distance focus and the mirror, and focus is the raising of convergence or divergence.so if there are no surface conververgence then focus clearly does exist . so how is the focal length is infinite?
Answer: To say that infinity is quite another way of saying it does not exist.
It's the same thing by saying that the parallel lines to infinity handle - mathematicians say something, and it is virtually meaningless, as you suggest.
It's the same thing, saying that liquidating the parallel lines meet at infinity - the mathematicians say something, and it is virtually meaningless, as you suggest.







