Ads
related to: nist traceable weights with certs and reps 2 and 4 years back from today
Search results
Results from the WOW.Com Content Network
For instance, in the basement of the NIST's Gaithersburg facility in 2009, when measuring the gravity acting upon Pt‑10Ir test masses (which are denser, smaller, and have a slightly lower center of gravity inside the Kibble balance than stainless steel masses), the measured value was typically within 8 ppb of 9.801 016 44 m/s 2. [25] [26] [27]
Whilst Certified Reference Materials are preferred where available, [3] [4] their availability is limited. Reference Materials that do not meet all the criteria for certified reference materials are more widely available: the principal difference is the additional evidence of metrological traceability and statement of measurement uncertainty ...
The NIST-4 Kibble balance, which is used to measure weight via electric current and voltage. With this instrument, the measurement of mass is no longer dependent on a defined mass standard and is instead dependent on natural physical constants. Metrology is the scientific study of measurement. [1]
Within a product's supply chain, traceability may be both a regulatory and an ethical or environmental issue. [3] Traceability is increasingly becoming a core criterion for sustainability efforts related to supply chains wherein knowing the producer, workers and other links stands as a necessary factor that underlies credible claims of social, economic, or environmental impacts. [4]
The Weights and Measures Law was first signed into law on March 2, 1799 by President John Adams. In 1905, a meeting of the states was held to address the challenges of regulating weights and measures. As a result, an agreement was made to convene annually to set national standards for voluntary adoption and implementation by the states.
It is based at the Pavillon de Breteuil in Saint-Cloud, France, a 4.35 ha (10.7-acre) site (originally 2.52 ha or 6.2 acres) [8] granted to the Bureau by the French Government in 1876. Since 1969 the site has been considered international territory, and the BIPM has all the rights and privileges accorded to an intergovernmental organisation. [ 9 ]
The U.S. National Security Agency (NSA) used to rank cryptographic products or algorithms by a certification called product types.Product types were defined in the National Information Assurance Glossary (CNSSI No. 4009, 2010) which used to define Type 1, 2, 3, and 4 products. [1]
The Federal Information Processing Standard Publication 140-3 (FIPS PUB 140-3) [1] [2] is a U.S. government computer security standard used to approve cryptographic modules. The title is Security Requirements for Cryptographic Modules. Initial publication was on March 22, 2019 and it supersedes FIPS 140-2.
Ads
related to: nist traceable weights with certs and reps 2 and 4 years back from today