We can use the fact that light changes its average speed in a transparent medium to find the light's new _______________ in that medium
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Question 3
3.
Read page 492 in your book, paying close attention to the analogy of the swimmer and the lifeguard and Fermat's principle. do you have any questions?
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Question 4
4.
Here is a video explaining why the explanation in your book explains what is happening, but now why. Watch this one carefully
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Question 5
5.
ok, that was tricky. maybe this one will help. or not.
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Question 6
6.
Ok, you have now watched two different "the reasons you are taught that light bends is kinda wrong, but here's the real answer". They are both reasonably accurate, and they do actually work together. I want a paragraph or two of you explaining the explanation that makes the most sense to you in your own words.