3 0 401 mm 4 0 242 mm WO0063 64 A very thin transparent film

Last updated: 6/28/2023

3 0 401 mm 4 0 242 mm WO0063 64 A very thin transparent film of soap solution thickness 0 is seen under reflection of white light Then the colour of the film appear to be 1 blue 3 red 2 black 4 yellow WO0064 WHERECndan ETHER