How to
Search
Find
How to
Join
Play Video
Video time control bar
0:00
▶️
⏸️
🔊
Audio volume control bar
0:00
/
0:00
↘️ 0.25
↘️ 0.5
↘️ 0.75
➡️ 1
↗️ 1.25
↗️ 1.5
↗️ 1.75
↗️ 2
↔️
↕️
Timecodes:
Related videos:
Could You Make It as a Lighthouse Keeper? (I Couldn't)
The Fresnel Lens: the Invention That Saved 1000 Ships
Hypercentric optics: A camera lens that can see behind objects
The invention that fixed lighthouses
If You're Breathing, Maybe Thank the Moon | The Middle Island Sinkhole
One Trip on This Railroad Cost $65 Million | The Iron Range and Huron Bay Railroad
Lava, Ice, and Ancient Seas: How Michigan Got Its Pictured Rocks
1941 A DIY Fresnel Lens From Tube
Fresnel Lens Manufacturing - 2018 Michigan Lighthouse Alliance Conference
How A Lighthouse Works | The Secret Life of Lighthouses | Channel 5
Things are changing (but it's not that scary)!
Why Are Some Beaches Squeaky? (The Legend of the Singing Sand) | Bete Grise, Michigan
The Scotch Cap Lighthouse Tragedy
The Flexibility of Fresnel Lenses: Beautiful Lighting for Photography and Cinematography
How to Make 1 Million Copper Bars | The Quincy Smelter
FRESNEL LENS MYTHS about solar projects and misconceptions
the last lighthouse keepers (2005)
Michigan's Billion-Year-Old Glowing Rocks | "Yooper" Stones
Fresnel Lens Design and Manufacturing
How To Start Fire With A Fresnel Lens / Magnifying Glass - Sun Magnification - Bushcraft & Survival