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A Fresnel lens works like a convex lens, even though it is of uniform thickness.
Thanks to a genial design, it is possible to make a convex lens that is almost flat, a so-called Fresnel lens.
It can be used, for example, as a magnifying glass or for beam path experiments.
Focal length: 22 cm.
Material: Acrylic.
Dimensions: Diameter 23 cm, thickness 2 mm.
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