The Fresnel Lens: the Invention That Saved 1000 Ships
12:15
Diseño y fabricación de lentes de placa de zona Fresnell en miniatura
8:12
The invention that fixed lighthouses
27:11
You're Probably Wrong About Rainbows
16:49
Iceland Spar: the Mineral That Changed Science
1:23:35
OFFSHORE NIGHTMARE: The Collapse of Texas Tower 4
8:32
Burning stuff with a giant fresnel lens + how a DLP projector works
19:36
Where Does Grounded Electricity Actually Go?
18:27