Uploaded May 2019 | Updated September 2026, 3 weeks ago

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The Royal Institution (Ri) released a video on sodium light absorption. I decided to make my own version and show a couple of other absorption and emission effects with a variety of sodium lamps.
The Ri video can be seen at: youtu.be/Kn2OyQh6o7U (How is Black Fire Made)
This video also marks more than 1000 subscribers. Thank you to everyone that finds these interesting, other than me, and for subscribing.