Hmmm, that gave me something to think about......
I have an idea how to recapture emitted electrons and rebalance the charge. It's probably been thought about but if not i'll be suprised.
Btw good job getting back into physics after teaching, big respect. I started a post grad teaching qualification to teach in college, did all the theory and stopped before starting the placement. I knew I'd be offered a job afterwards, and possibly never go back to get a masters, so i said goodbye and applied for my masters, now I'm writing the thesis :D
Physics is life, I'm sure you agree. Take it easy dude :D
Physics for me is among the better parts of life @physiscs.benjamin. Life itself has way bigger definition.
Yes, It's hard to focus on learning while you are working. Especially when we are teachers with a fair enough salary. We worry about the future of our students a lot more than we worry about our own. All the best with your thesis.