Cylindrical Lens Puzzle: a favorite classroom challenge problem- this cylinder of acrylic acts as lens that focuses light along a line rather than a point, and hence it can invert an image along its symmetry axis. Puzzle question: the word “GREEN” is flipped by this lens but the word “TOMATO” seems unaffected. Is the physics significantly different for red wavelengths as compare to green? Or is there another explanation/trick? Answer below. ➡️ Follow the link in my profile for info on where to b
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Lenticular Invisibility: this thin acrylic sheet is comprised of tiny cylindrical lenses which can allow images to be “out of focus” along one dimension which blurs thin images and hides them. This 70 lens per inch sheet is part of a lenticular optics kit that came as part of my @thecuriositybox subscription— amazing and fun! ➡️ Follow the link in my profile for info on where to find similar lenticular lens arrays and many other amazing items featured here on @physicsfun #lens #lensarray #cylind
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This week we dig into reading the power of a spherocylinder single-vision lens using the Marco LM-101 lensmeter. Lensmeter kits that go along with these lessons are now available for OpticianWorks Total Access members (within the U.S.) to borrow for 60 days. The kits contain various types of lenses, frame fronts and assignments, to give you the ability to gain some practical experience. Instructions for requesting yours are in the FAQ section on OpticianWorks.com. | Laramy-K OpticianWorks
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