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... virtual images are always upright
while real images are always inverted
Do you agree with this?
How about this:
R R/V
images of objects are inverted/upright.
V V/R
OR
Images are inverted if and only if the
image and object are of the same type.
Either one covers ALL bases for ALL lenses AND mirrors.
--
John Mallinckrodt mailto:ajm@csupomona.edu
Cal Poly Pomona http://www.csupomona.edu/~ajm