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| a very large colliding-beam machine in which superconducting magnets create millions of megavolts of energy |
| a wave produced by the acceleration of an electric charge and propagated by the periodic variation of intensities |
| conservation law
Any of various principles, such as the conservation of charge and the conservation of energy, that require some measurable property of a closed system to remain constant as the system changes. Conservation laws can be directly related to principles of symmetry. See also invariance, Noether's theorem. |