Concave and Convex Lenses

Author: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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רישום חופשי
Hypocycloids
立体几何-公理3及推论
分數化百分數：練習
The 3D Space

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Circle Theorem 2
Animation Playing Field LinArd
zzz_z
الدوال المتزايدة والمتناقصة والثابتة
angle chasing
sudut referensi

Discover Topics

Rectangle
Parallelogram
Constructions
Special Points
Circle