Free Sound Field: A sound field without acoustic boundaries or where the boundaries are so distant as to cause negligible reflections over the frequency range of audible sound. If the boundaries exist but completely absorb the sound then a virtual free field is created, thus anechoic chambers are used to accurately measure loudspeakers for their unique properties.

 

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Free Sound Field: A sound field without acoustic boundaries or where the boundaries are so distant as to cause negligible reflections over the frequency range of audible sound. If the boundaries exist but com . . . View Full Definition

Gibbs Free Energy: A thermodynamic property devised by Josiah Willard Gibbs in 1876 to predict whether a process will occur spontaneously at constant pressure and temperature. Gibbs free energy G is defined as . . . View Full Definition

Gibbs Free Energy Of Formation: The change in Gibbs free energy that accompanies the formation of one mole of a compound from its elements in their most stable form.

Greenfield Operation: A new operation that is built from “the ground up”.