sophiecentaur

Hope this isn't too personal, but the exaplanation goes a long way:

I hope this message isn't too public but I have a mother receiving palliative treatment for stage 4 cancer. As you might imgaine this takes up a big part of my life. Especially, as I'm the oldest of a flok of 4 siblings. I put up a brave face, but when push comes to shove things aren't great.

Good evening sir, I was exploring the concept of a flywheel for a rocket I'm designing and I stumbled upon a posting from 2012 made through your account on this thread. I was wondering if you had a minute to chat about the concept? All the best.

Hello I dont want to confuse the op, so I suggest that you would like to keep our descation we would do it here

https://www.physicsforums.com/threa...ctrons-drop-energy-levels.445985/post-2976248
Indeed - for eg Balmer Alpha transition in Hydrogen:

## ΔE = hΔf = μc^2\left(\sqrt{1-{\left(\frac{α}{3}\right)}^2}-\sqrt{1-{\left(\frac{α}{2}\right)}^2}\right)=3.0259670 E-19 J##

I interpret this as pretty much a direct subtraction of electron's 'wave energy' in level 2 from same in level 3 (higher).

"I used to be one of your greatest fans, Dave."
Is there a missing a smiley in there, or did I really offend? :P