wgroverFeb 2024Recommends
You might also find moiré-effect navigation beacons interesting, like the one that Tom Scott visits here: ▶ this video
in “Light characteristic” · View on HN
The moiré effect lights that guide ships home
The moiré effect lights that guide ships home on HackerTube: recommended by 1 Hacker News commenter across 1 month, 2024–2026.
Tom Scott
Open on YouTubeexplainer · evergreen
Tom Scott investigates moire-effect beacons, called Inogon leading marks, a Swedish invention from the 1980s that shows different patterns depending on the viewer's position. He visits one used to mark an undersea cable and tracks down its history.
Why Hacker News recommends it
Linked as the accessible explanation of how moire navigation lights work.
- people recommended it
- 1
- separate months
- 1
- strong recommendations
- 0
- discussed on HN
- 2024–2026
“the one that Tom Scott visits here”
What HN commenters said
3 Hacker News comments link this video. Each one links back to its thread.
notpushkinAug 2026Cites it
It is used and I guess it works largely the same way as in author’s first picture: you get arrows pointing towards where you should correct your course to. Tom Scott has made a video on those: ▶ this video
in “Guiding Ships with Moire Patterns” · View on HN
dublinbenSep 2024Cites it
This is nothing but blogspam of the embedded Tom Scott video: ▶ this video . This article adds nothing that is not already included in the video itself.
in “Using the moiré effect to show different arrows to each observer (2018)” · View on HN
Topics & tags
Ships, submarines & maritimeEveryday physics & science demosmoire effectinogonnavigation lightsmaritimetom scott