The Four Laws of Thermodynamics
—For Twin Toddlers
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Zeroth Law
You and your brother both have a granola bar, stop complaining.
If two systems are in thermal equilibrium respectively with a third system, they must be in thermal equilibrium with each other. -
First Law
You’re going to feel better when you poop.
When energy passes, as work, as heat, or with matter, into or out from a system, its internal energy changes in accord with the law of conservation of energy. -
Second Law
Daddy cannot put the broken banana back together.
In a natural thermodynamic process, the sum of the entropies of the interacting thermodynamic systems increases.
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Third Law
It’s impossible to get it clean and keep it clean.
The entropy of a system approaches a constant value as the temperature approaches zero.
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