Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
I've always wondered about this solar image thing. Using a rectangular
mirror, the image of the sun "nearby" (few meters away) is rectangular,
but "far away" (over 15 m) is circular.
I thought it had something to do
with the fact that a mirror has an infinite focal length.
Not sure my (high school) students have ever heard of "convolution,"
Is there another ("basic") explanation to use when trying to explain this
optical phenomenon to students?