- 184 Views
- Uploaded on

Download Presentation
## PowerPoint Slideshow about ' Lecture 30' - tassos

**An Image/Link below is provided (as is) to download presentation**

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

Lecture 30

- Thin Film Interference
- Assignment for Wednesday:
- Read 28: 1-3 Ray Optics
- You had an introduction in lab last week

- Problems: CQ1, CQ9, MC 18,MC19,MC20, 1

- Read 28: 1-3 Ray Optics

Problems due Friday

- 17: 1, 2, 4, 7, 9, 10, 12
- 2: speed in glass
- 4: wavelength in glass
- 7: two slit interference
- 9: ditto, given d and y5 – y1, find λ
- 10: two slits given fringe spacing, λ
- 12: Δr

Slide 17-17

Phase Changes Due to Reflection

Slide 17-18

Workbook Problems 17:10-11

- Wave reflected at various interfaces

A film of oil (noil = 1.2) floats on top of an unknown fluid “X” (with unknown index of refraction nx). The thickness of the oil film is known to be very small, on the order of 10 nm. A beam of white light illuminates the oil from the top, and you observe that there is very little reflected light, much less reflection than at an interface between air and X. What can you say about the index of refraction of X?

- nx > 1.2
- nx < 1.2
- nx = 1.2
- There is insufficient information to tell.

Assignment for Monday

- Enjoy your weekend

Download Presentation

Connecting to Server..