LENSES!
You don't actually
need a lens to form a real image, but you do need a lens to form
a bright real image.
(1/p) + (1/q) = (1/f), just as
for curved mirrors.
Magnifying Glass!
REVIEW!!
Some
Solved Thin-Lens problems.
Warning: many on-line sources I
have seen with solved problems for curved mirrors or thin lenses
show solutions that are essentially crazy from the standpoint of
mathematics. That is, they take an equation like 1/p + 1/q = 1/f
and plug numbers into it directly, then solve for the
unknown quantity! That's utterly nonsensical, because you can't
and shouldn't try to do algebra with numbers. For example, if
you are given p and q and asked to solve for f, you do it as
follows: 1/f = (p + q)/pq so f = pq/(p + q), etc. Getting
the answer in algebraic form first allows you then to be able to
spot instantly if you used the wrong sign convention for one of
the quantities, in choosing numbers to plug in.
THICK LENSES
Chromatic and Spherical
Aberrations of lenses!
OPTICAL DEVICES!
Diffraction is the bending of
waves around obstacles. It is easiest to observe when the
obstacle or opening in a barrier is about the same size as the
wavelength of the wave.
SUPERPOSITION AND INTERFERENCE
METAMATERIALS
Double Slit
Thin Films
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