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

Higher energy doesn’t necessarily mean more penetration power. Look at visible light for instance, it is in the THz range, but it has pretty crappy penetrative power.