1) There will be no tests on days when many students will be missing for APs. There will be a test for mathematical on light, mostly interference phenomena, on Thursday.
2) Whenever light is described as say 650 nm with no further information about it, it means the wavelength in a vacuum ( or air) is 650 nm. ( Don't forget nano means 10 to the -9 power or EE-9 on your calculator).
3) There is an error on the practice sheet. Problem 4 should read 660nm not 600 nm.
4) Congratulations to mathematical class on their performance on the Lightwaves Quiz. I can't review or return the quiz until all the makeups are in.
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