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Make: Technology on Your Time Volume 35
book

Make: Technology on Your Time Volume 35

by Mark Frauenfelder
July 2013
Intermediate to advanced
160 pages
7h 3m
English
Make: Community
Content preview from Make: Technology on Your Time Volume 35

Country Scientist

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How to Make and Use Retroreflectors

Written and photographed by Forrest M. Mims III

image

A retroreflector is an optical device that returns an oncoming beam of light back to its source. It can be as simple as a tiny glass sphere or a type of prism formed from glass or plastic.

While ordinary flat mirrors also reflect light, the light isn’t reflected back to the source but off to the side at the same angle the ...

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