1. In your own words please explain why there are alternating dark and light bands in the image that are straight lines across the top. 2. Explain why, inevitably, the top fringe will be dark, not reflecting visible light. 3. What is the thickness of the film at the top where it is dark with no light apparent reflecting from int. 4. Assuming the wavelength of green light on average is 540 nm, how much does the thickness of the film change between the position of the green edige on the second and the third "fringes"? 5. By observing these fringes, how do we know that the soap film is uniformly thick across a horizontal line while wedged and thicker at the bottom along a line running top to bottom