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law of conservation of energy

law of conservation of energy

1 4.9
Total energy in a system that does not gain or lose energy stays the same
  • noun
  • /lɔː ʌv ˌkɒnsərˈveɪʃən ʌv ˈɛnərdʒi/
  • Specialized
translation icon : ley de conservación de la energía
  • I don't believe I've violated the law of conservation of energy here, nor do I think this thought experiment follows through to the real world.

Examples

  • That's against the law of conservation of energy.

    Blog text (18)
  • OK, so the final bottom line for law of conservation of energy that you guys should remember is the following.

  • Supernatural (or magic or whatever) does not need to be bound by the law of conservation of energy or any other natural law.

    Blog text (27)
  • It is the law of conservation of energy in a fairly thin and transparent disguise.

    Blog text (18)
  • Projects focus on forms of energy, the law of conservation of energy, and the role that technological tools play in the transformation of energy from a nonuseful form to a useful form.

    Academic text (2007)
  • The law of conservation of energy implies that noxious waste cannot be simply disposed of by dilution and/or dispersion.

    Academic text (1992)
  • The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

  • According to the law of conservation of energy, the total energy in a closed system remains constant despite any changes within.

  • Teaching students about the law of conservation of energy helps them understand how energy flows through different systems.

Synonyms

conservation of energy
vslaw of conservation of energy
  • Specialized
3 4.1

A basic physics rule that total energy in a closed system cannot be created or destroyed

is the same principle but named explicitly as a law rather than a short phrase
first law of thermodynamics
vslaw of conservation of energy
  • Specialized
1 4.5

Total energy in a place where nothing enters or leaves stays the same while it changes form

is the same conservation principle but not tied to thermodynamics terminology

Surface Forms

Morphology

law + of + conservation + of + energy

The phrase is compositional: 'law' (a general rule) + 'conservation' (preservation) + 'energy' (usable power) clearly yields the idea of a rule that energy is preserved. The 'law of X' construction is a regular, cross-linguistic scientific pattern, so a B1 learner who knows the constituent words would readily infer the intended meaning.

Etymology

Law of conservation of energy gives a clear image: think of energy as coins in a closed box, which you can move or change but you cannot add or remove. So the rule means 'the total energy in a closed system stays the same'.