Episode 388: The Fresnel Lens (Entry 501.1C1312)
Aug 26, 2021, 09:00 AM
In which an efficient new piece of French glassware changes the history of lighthouses, and Ken learns the exact age of Discovery. Certificate #52246.
In which an efficient new piece of French glassware changes the history of lighthouses, and Ken learns the exact age of Discovery. Certificate #52246.
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