Over on YouTube [Applied Science] shows us how to make an f/0.38 camera lens using an oil immersion microscope objective. The f-number of a lens indicates how well it will perform in low-light. To ...
RICHMOND, Va. (WRIC) — Are you hoping to catch today’s solar eclipse, but can’t find any eclipse glasses? Here’s a way to safely watch the eclipse without looking at the sun, according to NASA.
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