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BeeDude :farnsworth: | 1 years ago (raw) | root | parent | reply | flag 
 @7f73a7d1 

Note: I've not yet read this!

Just at first glance, this stirs echos of a Rubens' Flame Tube

Here's a vid showing

Makes one wonder how much of an analog they are to each other

https://www.youtube.com/watch?v=pWekXMZJ2zM
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c2756be6 | 1 years ago (raw) | root | parent | reply | flag 
 @02134be6 It is similsr in principle! I think the main difference is that in the flame tube, the pipe itself forms the resonant cavity that gives rise to the modes you observe, while the gas discharge tube really only visualizes the field generated by resonances in the coil next to it.