Main Page | See live article | Alphabetical index In physics, a power law relationship between two scalar quantities x and y is any such that the relationship can be written as y = axk where a (the constant of proportionality) and k (the exponent of the power law) are constants. Examples of power law relationships: Stefan-Boltzmann law please add more to this list...' Examples of power law probability distributions: Pareto distribution Zipf's law please add more to this list...' Power laws are among the most frequent scaling laws that describe the scaling invariance found in many natural phenomena. External links A claim that the blogosphere obeys a powerlaw distribution This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.