Researching inductor parasitics, I found this cool manuscript by radio amateur David W Knight. To visualize the E-field in and around coils, they used a gas discharge tube! Even if you're not up to the math, check out the PDF linked below for a few more cool pictures 😄 

https://g3ynh.info/zdocs/magnetics/appendix/self_res/self-res.pdf

#physics #electronics #science

https://assets.chaos.social/media_attachments/files/111/131/333/175/022/928/original/2d5734473490402a.png 

 @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