1 HN user recommended this demo1 month2016–2020score 1
Years with an HN recommendation, 2007–2026
HN points to it as a demonstration of artificial daylight, especially for windowless or underground rooms, and to date the technology to 2014.
A short look at CoeLux, an artificial skylight that recreates the scattering process that makes the sky look blue, producing a convincing illusion of distant sun and depth.
“If anybody wants to see a cool artificial light that mimics natural light well take a look at coelux” (HN, 2016)
If anybody wants to see a cool artificial light that mimics natural light well take a look at coelux: [this video] It is imperfect (costs too much) but it'll give a good idea of why I think heliostat/optic cable/natural light is something more people need in their lives.
Shows a cool artificial light that mimics natural light well.
In this video ( [this video] ) they talk about the usage for underground buildings. It could be for underground buildings what the lift is for high buildings (eg make it practical). This was on Product Hunt a while ago: [link]
Discusses usage of the artificial sky light for underground buildings.
They are using these underground to help simulate the true daylight experience. Basically a smart led version of a traditional roof sunlight: [this video]
Shows smart LED skylight used underground to simulate daylight.
Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.
Plays via YouTube's privacy-enhanced embed
4 Hacker News comments
From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.
Citations, criticism and jokes