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Whose law is the foundation of thermodynamics and says energy is conserved?
PhysicsThermodynamics
Quick Answer
The first law of thermodynamics, developed through the work of James Prescott Joule and others. It states that energy cannot be created or destroyed, only transformed.
The Full Story
James Prescott Joule’s 19th-century experiments were crucial in establishing the mechanical equivalent of heat and the principle of energy conservation. The first law of thermodynamics formalized this idea: the change in a system’s internal energy equals heat added minus work done by the system. It is one of the most important laws in physics and underlies engines, heat pumps, chemistry, and astrophysics. Joule’s name is now used as the SI unit of energy.
Key Facts
1.Key experiments in the 1840s
2.Energy is conserved
3.The joule is named after James Prescott Joule
YouTube Angle
Suggested video title for this topic:
"The rule that says energy never vanishes — it only changes form."