DLO Live! Ep.33 Reticle Illumination

This one is going to get nerdy, folks!
I am travelling this week, so this one is going to be done under field conditions from my hotel room near Boston.
I'll talk a little bit about a few different ways reticles are typically illuminated in riflescopes and what applications these different illumination methods do best with.
Naturally, I'll open it up to a Q&A. I'll limit this to two hours as I have been doing lately.