Hey Paddy, glad you came and asked this again.
So my favourite weird one is split. But kinda linked.
Theres a 5th state of matter (Gas, Liquid, Solid = 3 then plasma is the 4th). 5th is these things known as Bose-Einstein Condensates.
They only occur when all of the particles in the system fall into the lowest energy state possible, then they all act as a single large scale quantum particle. Meaning we see things like tunneling and wave/particle duality happening on a macroscopic level. Quantum is strange and tough to observe BECs are quantum and observable….
The way to get there is also weird, lasers are used to remove energy from a system! Its the exact opposite of what I do now, where energy is coupled from the laser to the system. Madness!
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