Diaphragm
31Diaphragm (optics) — A 35 mm lens set to f/8; the diameter of the seven sided entrance pupil, the virtual image of the opening in the iris diaphragm, is 4.375 mm In optics, a diaphragm is a thin opaque structure with an opening (aperture) at its center. The role of… …
32Diaphragm (acoustics) — In the field of acoustics, a diaphragm is a transducer intended to faithfully inter convert mechanical motion and sound. It is commonly constructed of a thin membrane or sheet of various materials. The varying air pressure of the sound waves… …
33Diaphragm seal — An example of a diaphragm seal (in green) used to protect a pressure sensor. A diaphragm seal is a flexible membrane that seals and isolates an enclosure. The flexible nature of this seal allows pressure effects to cross the barrier but not the… …
34Diaphragm (structural system) — In structural engineering, a diaphragm is a structural system used to transfer lateral loads to shear walls or frames primarily through in plane shear stress. These lateral loads are usually wind and earthquake loads, but other lateral loads such …
35Diaphragm (mechanical device) — In mechanics, a diaphragm is a sheet of a semi flexible material anchored at its periphery and most often round in shape. It serves either as a barrier between two chambers, moving slightly up into one chamber or down into the other depending on… …
36Diaphragm compressor — A diaphragm compressor is a variant of the classic reciprocating compressor with backup and piston rings and rod seal. The compression of gas occurs by means of a flexible membrane, instead of an intake element. The back and forth moving membrane …
37Diaphragm (contraceptive) — A barrier method of contraception that is available by prescription only and must be sized by a health professional to achieve a proper fit. The diaphragm has a dual mechanism to prevent a pregnancy. A dome shaped rubber disk with a flexible rim… …
38Diaphragm pacing — Contents 1 Introduction 2 Indications for Use 3 Surgery 4 Availability Introduction Diaphragm Pacing, also known as …
39diaphragm spring — A type of spring shaped like a disc with tapering fingers pointed inward or like a wavy disc, used in some clutches. In an automotive clutch the diaphragm spring is part of the clutch pressure plate. When the clutch is engaged, this spring forces …
40Diaphragm (muscle) — The diaphragm is the muscle that separates the chest (thoracic) cavity from the abdomen. Contraction of the diaphragm muscle helps to expand the lungs during inspiration when one is breathing air in …
