There is a wonderful new video about "The Most Misunderstood Concept in Physics" - Entropy
by @veritasium
Though, actually I would say ENERGY is the most misunderstood concept and as a consequence ENTROPY is the most neglected one.
youtu.be/DxL2HoqLbyA
Why is it really cold in the mountains?
It sounds like a simple question, but it is actually really not that trivial.
I did a lot of digging, and came up with a few simple interactive simulation models to illustrate some key concepts, that lead to cold mountains. #ScieneTwitter