Nov 30, 2015 #1 janen13 Messages 1 Reaction score 0 How is the sharpness of shadows evidence for the propagation of light in a straight line ?
Nov 30, 2015 #2 DaveC426913 Gold Member Messages 23,891 Reaction score 7,922 It is a pretty straightforward question. How much thought have you given it? If light moved in squiggly lines what do you think the edges of shadows would look like?
It is a pretty straightforward question. How much thought have you given it? If light moved in squiggly lines what do you think the edges of shadows would look like?