Its most general definition is that the amplitude is the maximum positive displacement from the undisturbed position of the medium to the top of a crest. This is shown in the following diagram: In some discussions it is important to distinguish between positive and negative amplitudes.
Definitions: 1. Abbreviation for functional residual capacity (of lungs). The definition information for FRC is provided by Stedman's. You can search our medical dictionary here.Stedman's, part of Lippincott Williams & Wilkins, provides a comprehensive line of health-science publications for healthcare professionals and medical students.bbreviation for functional residual capacity (of lungs). The definition information for FRC is provided by Stedman's. You can search our medical dictionary here.
Family Research Council. Family Research Council (FRC) is a 501(c)(3) non-profit charitable organization that is an American conservative Christian group and lobbying organization. The FRC was formed in the United States in 1981 by James Dobson. It was incorporated in 1983.