(meter) constant
11Sound level meter — Type 1 Sound Level Meter (Shown: Svantek 979) Sound level meters measure sound pressure level and are commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft… …
12Acid dissociation constant — Acetic acid, a weak acid, donates a proton (hydrogen ion, high …
13Gravitational constant — The gravitational constant G is a key quantity in Newton s law of universal gravitation. The gravitational constant, denoted G, is an empirical physical constant involved in the calculation of the gravitational attraction between objects with… …
14Gas constant — Values of R [1] Units (V P T −1 n−1) 8.3144621(75)[2] J K−1 mol−1 5.189× …
15Physical constant — A physical constant is a physical quantity that is generally believed to be both universal in nature and constant in time. It can be contrasted with a mathematical constant, which is a fixed numerical value but does not directly involve any… …
16Gravitational coupling constant — The gravitational coupling constant, αG, is a fundamental physical constant, the coupling constant characterizing the gravitational attraction between two elementary particles with charge and nonzero mass. αG is also a dimensionless quantity, so… …
17Gas meter prover — A Gas Meter Prover is a piece of equipment used to verify the accuracy of a gas meter. Presently, gas meter provers (or more simply “provers”) refer to manually or electronic and/or computer controlled equipment used to calculate accuracy of a… …
18sound-level meter — ▪ instrument device for measuring the intensity of noise, music, and other sounds. A typical meter consists of a microphone for picking up the sound and converting it into an electrical signal, followed by electronic circuitry for operating …
19Mass flow meter — A mass flow meter A mass flow meter, also known as an inertial flow meter is a device that measures mass flow rate of a fluid traveling through a tube. The mass flow rate is the mass of the fluid traveling past a fixed point per unit time. The… …
20Lattice constant — The Lattice Constant refers to the constant distance between unit cells in a crystal lattice. Lattices in three dimensions generally have three lattice constants, referred to as a , b , and c . However, in the special case of cubic crystal… …
