Theorists · Ages 16–18· λ = 470 nm

Heat and Entropy

Squeeze and heat a box of molecules to discover $P V = N k T$ , then lift a wall between two gases and find out why they never unmix: the second law of thermodynamics and the arrow of time.

2 lessons 26 min 130 XP

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Lessons

1🎈Gases from the insidePressure is billions of molecular collisions per second; temperature is their average energy.13 min65 XP
2🎲Entropy and the arrow of timeThings mix, spread and cool down because there are overwhelmingly more ways to be messy than tidy.13 min65 XP