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Tesla Valve Explained With Fire

3 videos recommended on HN
YouTube
2 HN users recommended this demo2 months2019–2021 score 2
Years with an HN recommendation, 2007–2026

HN points to it as a clear, visual demonstration whenever a Tesla valve comes up.

NightHawkInLight demonstrates how a Tesla valve works by sending a propane flame front through one, making the flow visible. It is a short, hands-on experiment video.

“a very well made demonstration of how the valve works” (HN, 2019)

2 recommendations · 1 citations · Demos

3 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@ObsoleteNerd Dec 2019 Recommends
on HN thread A Tesla Valve
I’m assuming this is being posted due to this recent popular video, which I think is a very well made demonstration of how the valve works: [this video]
Well-made demonstration of how the Tesla valve works.
@showerst Aug 2021 Recommends
on HN thread Tesla valve
For a fun visual demonstration, check out nighthawkinlight's video where he runs a flamefront through one -- [this video] Also seconding the Huygen's optics video osamagirl69 already posted below -- [link]
Fun visual demonstration running a flame front through a Tesla valve.

Citations, criticism and jokes

@mymythisisthis Feb 2021 Cites it
on HN thread 1921 Duesenberg Model A Belonged to the Same Family for Almost a Century
Random tech from the 1920s <a href=" [this video] , Tesla Valve.</a><br> <a href=" [link] , Megola, Radial engine motorcycle.</a><br> <a href=" [link] American LaFrance Fire Truck</a><br> <a href=" [link] Thomann antique bicycle</a><br> <a href=" [link] Lanz Tractor</a><br> <a href=" [link] Television 1926</a><br> <a href=" [link] - A Giant Flying Boat</a><br>

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.

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