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Referencias:

• Bohren, C.F., Dimensional analysis, falling bodies, and the fine art of not solving differential equations (2004) Am. J. Phys, 72, pp. 534-537
• Pelesko, J.A., Cesky, M., Huertas, S., Lenz's law and dimensional analysis (2005) Am. J. Phys, 73, pp. 37-39
• The Pi theorem states that if p is the number of characteristic parameters (constant or variable) of the problem, and among them there are q that have independent dimensions, the number of dimensionless independent combinations that can be formed among them is equal to p-q. The original presentation of this theorem is due to E. Buckingham, On physically similar systems; Illustrations of the use of dimensional equations, Phys. Rev. 4, 345-376 (1914). It is also discussed in many books; see, for example, L. I. Sedov, Similarity and Dimensional Methods in Mechanics (Academic, New York, 1959); To be more precise, there can be a characteristic length as long as it does not play a role in the propagation of the waves, because in this case this length does not appear in the invariants ∏1, ∏n-2; Hall, H.E., (1974) Solid State Physics, , Wiley, New York
• Klemens, P.G., Dispersion relation for waves on liquid surfaces (1984) Am. J. Phys, 52, pp. 451-452
• Lighthill, J., (1978) Waves in Fluids, , Cambridge U. P, Cambridge

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