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  2. Certified reference materials - Wikipedia

    en.wikipedia.org/wiki/Certified_reference_materials

    Certified reference materials (CRMs) are 'controls' or standards used to check the quality and metrological traceability of products, to validate analytical measurement methods, or for the calibration of instruments. [1] A certified reference material is a particular form of measurement standard.

  3. Micrometer (device) - Wikipedia

    en.wikipedia.org/wiki/Micrometer_(device)

    These master standards have extreme-accuracy regional copies (kept in the national laboratories of various countries, such as NIST), and metrological equipment makes the chain of comparisons. Because the definition of the meter is now based on a light wavelength, the international prototype of the meter is not quite as indispensable as it once was.

  4. Track and trace - Wikipedia

    en.wikipedia.org/wiki/Track_and_trace

    An example of a generic RFID chip. Some produce traceability makers use matrix barcodes to record data on specific produce. The international standards organization EPCglobal under GS1 has ratified the EPC network standards (esp. the EPC information services EPCIS standard) which codify the syntax and semantics for supply chain events and the secure method for selectively sharing supply chain ...

  5. Metrology - Wikipedia

    en.wikipedia.org/wiki/Metrology

    The four primary reasons for calibrations are to provide traceability, to ensure that the instrument (or standard) is consistent with other measurements, to determine accuracy, and to establish reliability. [2] Traceability works as a pyramid, at the top level there is the international standards, which beholds the world's standards.

  6. Verification and validation - Wikipedia

    en.wikipedia.org/wiki/Verification_and_validation

    Verification is intended to check that a product, service, or system meets a set of design specifications. [6] [7] In the development phase, verification procedures involve performing special tests to model or simulate a portion, or the entirety, of a product, service, or system, then performing a review or analysis of the modeling results.

  7. Trump loyalist John Ratcliffe sails through confirmation as ...

    www.aol.com/trump-loyalist-john-ratcliffe-sails...

    “The Chinese Communist Party remains committed to dominating the world economically, technologically and militarily," he said. "Transnational criminal organizations are flooding American ...

  8. Jack Smith's last chapter: 4 takeaways from the special ... - AOL

    www.aol.com/jack-smiths-last-chapter-4-162838916...

    Special counsel Jack Smith's report on the Jan. 6 investigation of Donald Trump provides a closing chapter on an unprecedented legal case.

  9. Certified copy - Wikipedia

    en.wikipedia.org/wiki/Certified_copy

    Exemplified certified copy of Decree Absolute issued by the Family Court Deputy District Judge – divorce certificate. A certified copy is a copy (often a photocopy) of a primary document that has on it an endorsement or certificate that it is a true copy of the primary document. It does not certify that the primary document is genuine, only ...