null measurement

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• Null (physics) — In physics a null is a point in a field where the field quantity is zero as the result of two or more opposing quantities completely cancelling each other. The field may be scalar, vector or tensor in nature. Common situations where nulls arise… …   Wikipedia

• Null corrector — Testing a spherical mirror using an interferometer. All surfaces in the tester are either flat or spherical, so the tester itself is fairly easy to fabricate and test. This setup can test a spherical mirror of any size since the wavefront is… …   Wikipedia

• null — I. adjective Etymology: Anglo French nul, literally, not any, from Latin nullus, from ne not + ullus any; akin to Latin unus one more at no, one Date: circa 1567 1. having no legal or binding force ; invalid 2. amounting to nothing ; nil …   New Collegiate Dictionary

• null method of measurement — nulinis matavimo metodas statusas T sritis Standartizacija ir metrologija apibrėžtis Matavimo metodas, pagrįstas dviejų dydžių, matuojamojo ir pamatinio, verčių lyginimu. Kai jų skirtumas lygus nuliui, matuojamojo dydžio vertė lygi pamatinio… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

• null method of measurement — nulinis matavimo metodas statusas T sritis Standartizacija ir metrologija apibrėžtis Skirtuminio metodo atmaina, kai lyginamasis įtaisas, veikiamas matuojamojo dydžio ir mato, rodo nulį. pavyzdys( iai) Elektrinės varžos matavimas nuolatinės… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

• null method of measurement — nulinis matavimo metodas statusas T sritis Standartizacija ir metrologija apibrėžtis Skirtuminis matavimo metodas, kai matuojamojo dydžio ir lyginamosios tos pačios rūšies žinomos vertės dydžio verčių skirtumas padaromas lygus nuliui. pavyzdys(… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

• null method — noun : a method of measurement in which an unknown quantity (as of electric current) is compared (as in a Wheatstone bridge) with a known quantity of the same kind and found equal by zero response of the detector * * * a method of measurement… …   Useful english dictionary

• null method — a method of measurement using an electrical device, as a Wheatstone bridge, in which the quantity to be measured is balanced by an opposing known quantity that is varied until the resultant of the two is zero. [1870 75] * * * …   Universalium

• Level of measurement — The levels of measurement , or scales of measure are expressions that typically refer to the theory of scale types developed by the psychologist Stanley Smith Stevens. Stevens proposed his theory in a 1946 Science article titled On the theory of… …   Wikipedia

• Comparison of data serialization formats — This is a comparison of data serialization formats, different ways to convert complex objects to sequences of bits. It does not include markup languages used exclusively as document file formats. Contents 1 Overview 2 Syntax comparison of human… …   Wikipedia

• Temperature — This article is about the thermodynamic property. For other uses, see Temperature (disambiguation). A map of global long term monthly average surface air temperatures i …   Wikipedia