Concave and Convex Lenses

Auteur :Dr Mark Fernihough, Tom Walsh

Move the tip of the "Object" arrow to move the object. Move the point named " Focus' " to change the focal length. Move the point named " Focus' " to the right side of the lens to change to a concave lens.

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Parabolas, Lines and Nomograms
Function art 3D - waiting shed (v2)
Pythagorean Theorem: Quick Illustrator
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Truman's House's
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