|Fail-stop||Describes a component or subsystem that, in the event of a failure, produces no output (e.g., of material or data) rather than producing a damaged or incorrect output.|
|Fault-tolerant||Describes a system that can suffer failure in a component or subsystem, yet continue to function correctly.|
|Follower||A component in a cam system that is driven through a pattern of displacements as it rests against a moving contoured surface.|
|Free energy||Free energy is a measure of the ability of a system to do work, such that a reduction in free energy could in principle yield an equivalent quantity of work. The Helmholtz free energy describes the free energy within a system; the Gibbs free energy does not.|
|Free radical||A radical.|
Copyright © 1998 by John Wiley & Sons, Inc.