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Lecture 8 min
A Brief Tour of Lighthouse Optics, Continued
We continue the lighthouse tour. Fresnel lenses. Wick trimming. Catadioptric prisms. The dull stuff.
Premium Lecture 9 min
Some Stuff About Postal Sorting Machines, Sort Of
A lecture about, you know, those machines that sort mail. From, I guess, a long time ago. With several digressions.
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