You shine a laser on a plastic prism made from an unknownmaterial and measure the angles relative to the normal that thelight takes both inside and outside the medium. You make a plot ofsin ?inside versus sin?outside for the plastic object and calculatethe slope of best-fit line of your plot to be 0.79365 ± 0.05669.What is the index of refraction of the plastic object?
Correct Answer: 1.26 +/- 0.09
How do you get the 0.09 uncertainty?