A scale-free network is a network whose degree distribution follows a power law, at least asymptotically. That is, the fraction P(k) of nodes in the network having k connections to other nodes goes for large values of k as
A snapshot of the weighted planar stochastic lattice (WPSL)
Derek John de Solla Price was a British physicist, historian of science, and information scientist. He was known for his investigation of the Antikythera mechanism, an ancient Greek planetary computer, and for quantitative studies on scientific publications, which led to his being described as the "Herald of scientometrics".
Derek de Solla Price with a model of the Antikythera mechanism
An engraving of the Tower of the Winds in Athens. A 1762 illustration reproduced by Noble and Price (1968)