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  2. List of EIA standards - Wikipedia

    en.wikipedia.org/wiki/List_of_EIA_standards

    500–599. EIA-535 Fixed Tantalum Capacitors. TIA-568 cable wiring standard for structured cabling (Commercial Building Telecommunications Cabling Standard) EIA/TIA-569 Commercial Building Standard for Telecommunications Pathways and Spaces. EIA/TIA-570 Residential and Light Commercial Telecommunications Wiring Standard.

  3. IEEE Standards Association - Wikipedia

    en.wikipedia.org/wiki/IEEE_Standards_Association

    The Institute of Electrical and Electronics Engineers Standards Association (IEEE SA) is an operating unit within IEEE that develops global standards in a broad range of industries, including: power and energy, artificial intelligence systems, internet of things, consumer technology and consumer electronics, biomedical and health care, learning technology, information technology and robotics ...

  4. E/A ratio - Wikipedia

    en.wikipedia.org/wiki/E/A_ratio

    E/A ratio. The E/A ratio is a marker of the function of the left ventricle of the heart. It represents the ratio of peak velocity blood flow from left ventricular relaxation in early diastole (the E wave) to peak velocity flow in late diastole caused by atrial contraction (the A wave). [1] It is calculated using Doppler echocardiography, an ...

  5. List of standardized tests in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_standardized_tests...

    WorkKeys. California Achievement Test. ITBS – Iowa Test of Basic Skills [2] SAT – formerly Scholastic Aptitude Test. SAT Subject Tests. CLT – Classic Learning Test. Former English Language Proficiency Test – ELPT. PSAT/NMSQT – Preliminary SAT/National Merit Scholarship Qualifying Test.

  6. Steel grades - Wikipedia

    en.wikipedia.org/wiki/Steel_grades

    European standard steel grades EN 10027-1 steel grade designation system. European standard steel grade names fall into two categories: Steel specified by purpose of use and mechanical properties. Steel specified by chemical composition. The inclusion of a letter 'G' before the code indicates the steel is specified in the form of a casting.

  7. Wi-Fi 6 - Wikipedia

    en.wikipedia.org/wiki/Wi-Fi_6

    Wi-Fi 6, or IEEE 802.11ax, is an IEEE standard from the Wi-Fi Alliance, for wireless networks ( WLANs ). It operates in the 2.4 GHz and 5 GHz bands, [9] with an extended version, Wi-Fi 6E, that adds the 6 GHz band. [10] It is an upgrade from Wi-Fi 5 ( 802.11ac ), with improvements for better performance in crowded places.

  8. Registration, Evaluation, Authorisation and Restriction of ...

    en.wikipedia.org/wiki/Registration,_Evaluation...

    C294, 25.11.2005, pp. 38–44. Registration, Evaluation, Authorisation and Restriction of Chemicals ( REACH) is a European Union regulation dating from 18 December 2006. [1] REACH addresses the production and use of chemical substances, and their potential impacts on both human health and the environment. Its 849 pages took seven years to pass ...

  9. e (mathematical constant) - Wikipedia

    en.wikipedia.org/wiki/E_(mathematical_constant)

    The number e is a mathematical constant approximately equal to 2.71828 that can be characterized in many ways. It is the base of the natural logarithm function. It is the limit of as n tends to infinity, an expression that arises in the computation of compound interest. It is the value at 1 of the (natural) exponential function, commonly ...