Cylindrical Lens Puzzle: this cylinder of acrylic acts as lens that focuses light along a line rather than a point- and thus 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 buy this and other amazing items featured
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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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