ELi5: Why do 5GHz wifi signals have trouble passing through walls compared to 2.4GHz wifi signals even though higher frequency means more energy and thus more penetration power?

Question

Please make me understand this as I’ve been trying to figure it out and it’s been bugging me so much!!

In: Physics

Answer 1

TL DR: Tiny wavelengths such as gamma pass between atoms, Massive wave lengths such as radio diffract between large objects such as houses. Stuff like UV, Light and those around 5G frequency can’t pass.