ˈ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷- noun
: a statement in optics: if light traverses a given course it can traverse the same course in the opposite direction and hence it follows that any object point and its real image are interchangeable
ˈ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷- noun
: a statement in optics: if light traverses a given course it can traverse the same course in the opposite direction and hence it follows that any object point and its real image are interchangeable
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012