Concave Mirror Images
Why is that you can see a REAL image in a concave mirror
when you are looking into the mirror?
A real image is not necessarily an image that is really you. A real image
is one that really has light coming together at it. Place a piece of paper
where the image appears to be located. If you see a picture on the paper,
then the image is real. An image that appears to be in front of the mirror
is usually real. An image that seems to be behind the mirror is virtual.
The light does not go behind the mirror. A real image can be used to expose
film, creating a photograph. This cannot be done with a virtual image. To
use a virtual image for this, you must use a lens or another mirror to
create a real image on the film.
Dr. Ken Mellendorf
Illinois Central College
Some what belated, but the web site below explains it pretty well:
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Update: June 2012