In the extreme circumstance the place an item is undoubtedly an infinite distance absent, S1 = ∞, S2 = f and M = −file/∞ = 0, indicating that the item would be imaged to one position in the focal airplane. 다시 한번 비밀번호 확인 하시면 이용중인 화면으로 돌아가며, 작성 https://michaelj319ite0.blognody.com/22407595/the-basic-principles-of-콘텍트-렌즈-원리