I have read some where that for a lens to be anti reflective,it need to have coating from both the sides. Front side Puts the light in systematic Order and Back side helps by adjusting the "Phase" ie. Crests and troughs of the Light waves so that they nutralise each other.
1.How far this is true ?
2. How it can be verified?
3. How does the Single sided Coating work?
:hammer: