Vlad Smil - Energy: A Beginners Guide Written by 

Aristotle (384–322 B.C.E.) created the term in his Metaphysics, by joining εν (in) and (work) to form (energeia, “actuality, identified with movement”)

The law of conservation of energy — that energy can be neither created nor destroyed — is now commonly known as the first law of thermodynamics.

Entropy — from the Greek(transformation) — to measure the degree of disorder in a closed system.

The second law of thermodynamics, the universal tendency toward heat death and disorder,

The third law of thermodynamics,

all processes come to a stop (and entropy shows no change) only when the temperature nears absolute zero (–273 °C).

E = mc2 — energy is equal to the product of mass and the square of the speed of light.

Uranium 235 releases an amount of energy equivalent to 190 tonnes of crude oil

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