Consider a thin film of silicon grease (n=1.5) between two flat microscope slides having length L=10cm. The top slide is made of plastic (n=1.4) and the bottom slide is made of glass (n=1.6). at one end the slides are in contact and at the other end they are separated by a wire that has width h=.02mm. Assume we are using a monochromatic light source of wavelength =500nm.
what is the spacing between the dark fringes?
Consider a thin film of silicon grease (n=1.5) between two flat microscope slides having length L=10cm....
Thin film examples Suppose the two glass plates in the figure are two microscope slides 10 cm long. They are in contact at one end and are separated by a piece of paper 0.020 mm thick at the other end. What is the spacing of the interference fringes seen by reflection? Is the fringe at the line of contact bright or dark? Assume monochromatic light with λ-500 nm. λο 500 nm h - 0.020 mm 1 10.0 cm
6. [15 ptsJTwo glass plates are 15.0 cm long. At one end they are in contact, at the other end they are separated by 0.03 mm. Assume normal incidence with a monochromatic light (wavelength in air is 50nm) a) Is the fringe at the line of contact bright or dark? Explain your answer. What is the spacing of the bright b) If the glass plates have n 1.6 and space between plates contains water (n 1.33). Is the fringe at...
Question 5: How would dust and oil on the glass plates affect the results? EXPERIMENT 10 THIN FILM INTERFERENCE Light from a monochromatic source is shined downward on two glass plates that are separated at one end by a hair. Light that is reflected from the top and bottom surfaces of the wedge-shaped thin film of air undergoes interference, and a series of dark and light lines are seen. By counting the number of dark or light lines over a...