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  2. Metrology - Wikipedia

    en.wikipedia.org/wiki/Metrology

    Producing good measurements is important in industry as it has an impact on the value and quality of the end product, and a 10–15% impact on production costs. [6] Although the emphasis in this area of metrology is on the measurements themselves, traceability of the measuring-device calibration is necessary to ensure confidence in the measurement.

  3. Turbidity - Wikipedia

    en.wikipedia.org/wiki/Turbidity

    Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air.The measurement of turbidity is a key test of both water clarity and water quality.

  4. Calibration - Wikipedia

    en.wikipedia.org/wiki/Calibration

    The formal definition of calibration by the International Bureau of Weights and Measures (BIPM) is the following: "Operation that, under specified conditions, in a first step, establishes a relation between the quantity values with measurement uncertainties provided by measurement standards and corresponding indications with associated measurement uncertainties (of the calibrated instrument or ...

  5. History of measurement systems in Pakistan - Wikipedia

    en.wikipedia.org/wiki/History_of_measurement...

    The History of measurement systems in Pakistan begins in early Indus Valley civilization when pastoral societies used barter to exchange goods or services and needed units of measurement. The System of measurement is a set of units of measurement which can be used to specify anything which can be measured and were historically important ...

  6. Secondary School Certificate - Wikipedia

    en.wikipedia.org/wiki/Secondary_School_Certificate

    Secondary School Certificate is a public exam for classes 9 and 10 separately. Class 9 exam is called SSC part-1 and class 10 exam is called SSC part-2. This exam is conducted by government boards, officially known as Boards of Intermediate and Secondary Education, or simply BISE.

  7. Thermometer - Wikipedia

    en.wikipedia.org/wiki/Thermometer

    According to British Standards, correctly calibrated, used and maintained liquid-in-glass thermometers can achieve a measurement uncertainty of ±0.01 °C in the range 0 to 100 °C, and a larger uncertainty outside this range: ±0.05 °C up to 200 or down to −40 °C, ±0.2 °C up to 450 or down to −80 °C.

  8. List of measuring instruments - Wikipedia

    en.wikipedia.org/wiki/List_of_measuring_instruments

    Established standard objects and events are used as units, and the process of measurement gives a number relating the item under study and the referenced unit of measurement. Measuring instruments, and formal test methods which define the instrument's use, are the means by which these relations of numbers are obtained.

  9. Central Board of Secondary Education - Wikipedia

    en.wikipedia.org/wiki/Central_Board_of_Secondary...

    CBSE conducts the final examinations for Class 10 and Class 12 every year in the month of February and March. The results are announced by the end of May. [ 8 ] The board earlier conducted the AIEEE Examination for admission to undergraduate courses in engineering and architecture in colleges across India, however the AIEEE exam was merged with ...