Comments by "El Burro “El Burro Grande” Grande" (@El-Burro-Grande) on "Два вихревых кольца, сталкивающихся в SLOW MOTION - Smarter Every Day 195" video.

  1. Probably able to deal with much higher density rings in water than in air - providing a much more visible result. Also, water is different than air in that you can compress air - and you cannot compress water, which I imagine would have a bearing on the physics involved - and the result. I'm going to go with this being a completely different thing in water than in air.
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  2. I expect it will be explained somehow involving the principle of conservation of angular momentum
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