A few things to do for Monday:
1. Review the concept of critical angle and the related formula.
2. Calculate the critical angle of diamond (n = 2.417).
3. If a substance has a critical angle of 60 degrees, what is its index of refraction?
4. What is the critical angle of air (n = 1.0028). One of the classes did this already.
5. (Review problem.) A 475 nm light ray hits a tank of water (n = 1.33) at an angle of 30 degrees with respect to the normal line. Find the angle of refraction, speed and wavelength inside the water.
6. Prep for the next formal lab. To do this, research the following:
a. focal length. What is the definition?
b. Our next lab will investigate the question: what is the relationship between the location of an object (how close it is to a lens) and whether or not an image forms, and the nature of the image that forms (bigger or smaller image, where it forms, etc.). Decide on a type of protocol to investigate these questions.
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