follow the template for lab report and answered sheet video is included

This week's lab is based on our knowledge of Snell's Law:
n1 sin θ1 = n2 sin θ2
and subsequently the critical angle:
sin θc = nr/ni
Imagine light traveling in these three situations:
Water to Air (nwater = 1.33)
Glass to Air (nglass = 1.49)
And

Glass to Water.

Please make a plot of angle of refraction versus incident angle for each of these, and please point out where the critical angle is.
Please remember to do the full report here. Remembe,r this assignment is due at the end of week 5.