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energy level

a comparative level of capacity for vigorous activity:
The child has a high energy level.
Also called energy state. Physics. one of a quantized series of states in which matter may exist, each having constant energy and separated from others in the series by finite quantities of energy.
1905-10 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for energy level
  • When voltage is applied, the polymer's electrons are raised to a higher energy level.
  • The light excites the electrons to a higher energy level.
  • It generally does not interact with matter due to its low energy level, but it does interact a small amount with photons.
  • My energy level came back, my blood pressure returned to normal, and my cholesterol levels plummeted.
  • Early in the second half, our energy level was coming down.
  • Its possible an instability has formed in the energy level, possibly due to pressure building up from another source.
  • Exercise also increases the body's energy level, lowers tension, and improves your ability to handle stress.
  • It say there that photons are emitted one electron moved from one higher energy level to a lower energy level.
  • Heating the material produces phonons which stimulate another transition to another energy level.
  • The activities that require high energy level were more problematic for performance.
British Dictionary definitions for energy level

energy level

noun (physics)
a constant value of energy in the distribution of energies among a number of atomic particles
the energy of a quantum state of a system. The terms energy level and energy state are often used loosely to mean quantum state. This is avoided in precise communication
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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energy level in Science
energy level  
One of a set of states of a physical system associated with a range of energies. Electrons in an atom, for example, can shift between the different energy levels corresponding to orbitals in different shells. Also called energy state.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for energy level


in physics, any discrete value from a set of values of total energy for a subatomic particle confined by a force to a limited space or for a system of such particles, such as an atom or a nucleus. A particular hydrogen atom, for example, may exist in any of several configurations, each having a different energy. These energy states, in their essentials, remain fixed and are referred to as stationary states.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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