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Łódź, Poland

Lodz University of Technology

Energy Transformation

Transformacja energetyczna

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Energy Transformation at PŁ »
Definitions and quotes »

⇑Energy Transformation at PŁ

Language: Polish Studies in Polish

University website: www.p.lodz.pl/en

⇑Definitions and quotes

Energy

In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The SI unit of energy is the joule, which is the energy transferred to an object by the work of moving it a distance of 1 metre against a force of 1 newton.

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Energy

We must proceed with our own energy development. Exploitation of domestic petroleum and natural gas potentialities, along with nuclear, solar, geothermal, and non-fossil fuels is vital. We will never again permit any foreign nation to have Uncle Sam over a barrel of oil.

Gerald Ford, speech to the Anti-Defamation League of B'nai B'rith, West Palm Beach, Florida (January 26, 1974); reported in Congressional Record (February 4, 1974), vol. 120, p. 2044.

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Energy

If you take a bale of hay and tie it to the tail of a mule and then strike a match and set the bale of hay on fire, and if you then compare the energy expended shortly thereafter by the mule with the energy expended by yourself in the striking of the match, you will understand the concept of amplification.

William Shockley

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Energy

It is important to realize that in physics today, we have no knowledge of what energy is. We do not have a picture that energy comes in little blobs of a definite amount.

Richard Feynman, in The Feynman Lectures on Physics (1964) Volume I, 4-1

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