thumb|A foldscope thumb|thumbtime=55|Assembling a Foldscope
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thumb|A foldscope thumb|thumbtime=55|Assembling a Foldscope
A Foldscope is an optical microscope that can be assembled from simple components, including a sheet of paper and a lens. It was created by Manu Prakash and designed to cost less than one USD to build. It is a part of the "frugal science" movement which aims to make cheap and easy tools available for scientific use in the developing world.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).