reference measurement

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• Reference range — Reference ranges edit in: blood urine CSF feces In health related fields, a reference range or reference interval usually describes the variations of a measurement or value in healthy i …   Wikipedia

• Reference ranges for blood tests — Reference ranges edit in: blood urine CSF feces Reference ranges for blood tests are sets of values used by a health professional to interpret a set of …   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

• measurement — /mezh euhr meuhnt/, n. 1. the act of measuring. 2. a measured dimension. 3. extent, size, etc., ascertained by measuring. 4. a system of measuring or measures: liquid measurement. [1745 55; MEASURE + MENT] * * * Association of numbers with… …   Universalium

• Measurement uncertainty — In metrology, measurement uncertainty is a non negative parameter characterizing the dispersion of the values attributed to a measured quantity. The uncertainty has a probabilistic basis and reflects incomplete knowledge of the quantity. All… …   Wikipedia

• measurement system — Introduction       any of the systems used in the process of associating numbers with physical quantities and phenomena (metrology). Although the concept of weights and measures (measurement) today includes such factors as temperature, luminosity …   Universalium

• Measurement of biodiversity — Main article: Biodiversity Polar bears on the sea ice of the Arctic Ocean, near the north pole. A variety of objective measures have been created in order to empirically measure biodiversity. Each measure of biodiversity relates to a particular… …   Wikipedia

• Reference antenna — A reference antenna is an antenna with known performance. It is normally used to calibrate other systems.Reference antennas are built with particular care taken to make them simple, robust and repeatable. In a common usage scenario a reference… …   Wikipedia

• Reference noise — In telecommunication, reference noise is the magnitude of circuit noise chosen as a reference for measurement. Note: Many different levels with a number of different weightings are in current use, and care must be taken to ensure that the proper… …   Wikipedia

• reference — 1. noun /ˈɹɛf.ɹəns,ˈɹɛf.ɜː(ɹ).əns/ a) A measurement one can compare to. b) Information about a person, provided by someone (a referee) with whom they are well acquainted 2. verb /ˈɹɛf.ɹəns,ˈɹɛf.ɜː(ɹ).əns/ a) to refer to, to make reference to, to… …   Wiktionary

• Traffic measurement (telecommunications) — Measurement of traffic within a network allows network managers and analysts to both make day to day decisions about operations and to plan for long term developments [1, 2] . Traffic Measurements are used in many fundamental activities such as… …   Wikipedia