object in front of concave/convex mirror

[Fu-Kwun Hwang]

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The black circle is the object. You can drag any point in it to change it's shape.
The image might not be unique if the curvature is too small (there is no unique forcus point).
All the light paths were calculated from the law of reflection.
i.e. The angle of reflection equals the angle of incidence.

You can change the curvature R (slider or drag points with mouse) or change the scale of the simulation area.

Registed user can get files related to this applet for offline access.
Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
If java program did not show up, please download and install latest Java RUN TIME