- #1
PintoCorreia
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Homework Statement
What is meant by this: "When mirroring a source in a plane mirror, it looks like the rebounding light rays come from a virtual source at the back of the mirror."
I will illustrate this with a question:
The figure shows a light source A, from
an ordinary light bulb, that
transmits rays in all directions. two
of those light rays (r1 and r2) are drawn
You also see a mirror. The (specular)
front you will find on the side of
the light source.
The drawing is a top view of
the situation, otherwise
said: we concentrate on
the directions in the plane in which we draw
and forget the space in which we
ourselves.
-The rebounding rays are portions of whole lines. Draw those entire lines, so
even the pieces on the back of the mirror and mark the point of intersection.-That marked point of intersection has a special position with respect to the light source!
What position is that? Show the validity of your claim.
Homework Equations
mirrors, Snellius
The Attempt at a Solution
Trying to understand...
What is meant by rays on the back of the mirror?
What type of 'special position' is meant here?