Vincenza I. Bartl
The Agent That Works Harder After The Closing Papers Are Signed.
Monday, August 14, 2017
How To Build A Pinhole Camera, And Why It Works
Pinhole cameras are easy to build, and great for viewing the solar eclipse.
from Forbes Real Time http://www.forbes.com/sites/briankoberlein/2017/08/14/how-to-build-a-pinhole-camera-and-why-it-works/
via
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