Discussion: Thin-Film Interference This is an online discussion based on the prompt below in red font. It is assumed you

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Discussion Thin Film Interference This Is An Online Discussion Based On The Prompt Below In Red Font It Is Assumed You 1 (199.26 KiB) Viewed 42 times

Discussion: Thin-Film Interference This is an online discussion based on the prompt below in red font. It is assumed you have attempted to answer the questions on the previous page before submitting a response to the discussion prompt. While you are being graded primarily based on participation, to earn full credit your responses should follow these guidelines: 1. Post an initial response to the prompt, other responses will not be visible until you do so. 2. At least 24 hours after your initial post, comment on at least one of your peer's conclusions. (Please don't forget our community guidelines! 3. Your comments should not be limited to statements of fact, feel free to pose questions to your group mates if you are unclear about something. Posts should be written in complete sentences, one word answers will not earn you any credit. 4. Comment as early during the week as possible to help your group out. In this discussion, we consider a beam of light (f = 7.5 x 1044 Hz) in air (n = 1) incident on a soap film (n = $). Consider light incident on a thin soap film, as illustrated in the cross-sectional side-view diagram below. The soap film is supported by a loop (not shown), which is held vertically. Only a small portion of the film has been shown: the thickness of the film is greatly exaggerated. Cross-sectional side view (The thickness of the film is greatly exaggerated) Air Soap film Air Second boundary First boundary Sketch the reflected and transmitted light at the first air-soap boundary on the left, then follow the transmitted light to the second soap-air boundary on the right and draw the reflected and transmitted light, and lastly for the reflected light inside the film draw it as it transmits across the first soap-air boundary on the left. On your sketch write down the frequency and wavelength of the light in each region. Suppose that an observer were located on the left side of the soap film. Which of the rays that you drew could reach this observer? Please either take a picture of your predictions and upload it to Canvas or use a drawing program (eg. Windows "Paint" or Mac "Paintbrush") to reproduce the figure and upload it to Canvas. Make sure you embed the image in your discussion post to earn full credit, do not simply attach the file to your post. a