What We
See
Nothing is
worse than to go fishing and have the sunlight
reflecting right into your eyes making it
difficult to see fish and most of all, your
fly. That's why they invented polarized
sunglasses. When light travels through
the air it is in the form of waves.
These waves are moving in many different
directions. When light hits the water,
the waves change from traveling in many
different directions to being parallel to the
surface. Polarized glasses have a filter which
blocks the horizontal waves, therefore
blocking out the glare. (High Sight Optometry)
Also, while looking into
the water, the objects you see are not
actually in the spot you see them. This
is due to refraction. Refraction is when a
light wave gets bent upon entering a medium
with a different speed. The amount of
bending that occurs, depends on the types of
media. Using Snell's Law, you can relate the
indices of refraction for the media to the
angles of sight. (GSU)
From
http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/refr.html#c3
A free
calculation guide for Snell's Law can be
found at http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/refr.html#c3
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