Abstract
Forces observed in nature can be classified into four categories according to their observed strength at low energies: strong, electromagnetic, weak, and gravitational. Their strengths, when characterized by dimensionless parameters, are roughly of the following orders of magnitude:
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© 1986 Springer Science+Business Media New York
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Mohapatra, R.N. (1986). Important Basic Concepts in Particle Physics. In: Unification and Supersymmetry. Contemporary Physics. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-1928-4_1
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DOI: https://doi.org/10.1007/978-1-4757-1928-4_1
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