In the acute case where an item is definitely an infinite length absent, S1 = ∞, S2 = file and M = −file/∞ = 0, indicating that the object could be imaged to just one level during the focal airplane. 각각의 렌즈는 해상도, 각 넓이, 그리고 크기뿐 아니라 구조 https://saeedl531mwg1.targetblogs.com/profile