Metcalfe's law

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Metcalfe's law

"The value of a network increases exponentially with the number of nodes," coined by Bob Metcalfe, founder of 3Com Corporation and major designer of Ethernet. A network becomes more useful as more users are connected. A primary example is the Internet. It fostered global email, which became more valuable as more users adopted it. See laws.
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Throw in the effects of Metcalf's law, which states that the value of a network is proportional to the square of the number of connected users, and you've got the makings of a truly global, almost cosmic brain trust.
Metcalf's Law states that the power of a network is proportional to the square of the number of nodes in the network; the number of DoD TechMatch nodes is growing rapidly.
Social media is based on various forms of network theory, including Sarnoff's Law, Metcalf's Law and Reed's Law, which describe the effect of networks and allow us to understand the impact of what is often referred to as Web 2.