- calibration against a primary standard
- Техника: эталонирование
Универсальный англо-русский словарь. Академик.ру. 2011.
calibration against a primary standard
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Primary time standard — In telecommunications, a primary time standard is a time standard that does not require calibration against another time standard. Note 1: Examples of primary time, ( i.e. , frequency standards) are caesium standards and hydrogen masers. Note 2:… … Wikipedia
Measurement microphone calibration — In order to take a scientific measurement with a microphone, its precise sensitivity must be known (in volts per Pascal). Since this may change over the lifetime of the device, it is necessary to regularly calibrate measurement microphones. This… … Wikipedia
Kilogram — Kg redirects here. For other uses, see Kg (disambiguation). Kilogram A computer generated image of the international prototype kilogram (IPK). The IPK is the kilogram. The IPK, which is roughly the size of a golf ball, sits here alongside a ruler … Wikipedia
Thermometer — A clinical mercury in glass thermometer … Wikipedia
Microphone — For the indie film, see Microphone (film). Microphones redirects here. For the indie band, see The Microphones. A … Wikipedia
Hygrometer — Not to be confused with hydrometer. A hygrometer (UK: /haɪˈɡrɒmɪtə/) is an instrument used for measuring the moisture content in the environmental air, or humidity. Most measurement devices usually rely on measurements of some other quantity … Wikipedia
Gran plot — NOTOC NOEDITSECTION The equivalence volume is used to compute whichever of [H^+] {0^{ or [OH^ ] {0^{ is unknown. The pH meter is usually calibrated with buffer solutions at known pH values before starting the titration. The ionic strength can be… … Wikipedia
Weston cell — The Weston cell, invented by Edward Weston in 1893, is a wet chemical cell that produces a highly stable voltage suitable as a laboratory standard for calibration of voltmeters. It was adopted as the International Standard for EMF in… … Wikipedia
Determination of equilibrium constants — Equilibrium constants are determined in order to quantify chemical equilibria. When an equilibrium constant is expressed as a concentration quotient, it is implied that the activity quotient is constant. In order for this assumption to be valid… … Wikipedia
Magnetochemistry — is concerned with the magnetic properties of chemical compounds. Magnetic properties arise from the spin and orbital angular momentum of the electrons contained in a compound. Compounds are diamagnetic when they contain no unpaired electrons.… … Wikipedia
Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… … Wikipedia
