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The moiré effect lights that guide ships home
About this video
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 it appears in the archive
Linked as the accessible explanation of how moire navigation lights work.
AI-generated summary and labels from the source dataset; verify important details against the video. Source & credits.
From the Hacker News discussion
You might also find moiré-effect navigation beacons interesting, like the one that Tom Scott visits here: [VIDEO]
Read original comment ↗This is nothing but blogspam of the embedded Tom Scott video: [VIDEO] . This article adds nothing that is not already included in the video itself.
Read original comment ↗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: [VIDEO]
Read original comment ↗