Concave and Convex Lenses

Autor: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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Conway Circle Theorem
Rolling an Equilateral Triangle
Parallelogram Anatomy
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Optimal Lake Travel (tangential and arc travel)
Test
Cubo del binomio (a+b)^3
pyramid
More and Less than 1%: IM 7.4.9

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