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  2. International Prototype of the Kilogram - Wikipedia

    en.wikipedia.org/wiki/International_prototype_of...

    The International Prototype of the Kilogram (referred to by metrologists as the IPK or Le Grand K; sometimes called the ur-kilogram, [1] [2] or urkilogram, [3] particularly by German-language authors writing in English [3] [4]:30 [5]: 64 ) is an object whose mass was used to define the kilogram from 1889, when it replaced the Kilogramme des ...

  3. Word wall - Wikipedia

    en.wikipedia.org/wiki/Word_wall

    Word walls can be used in classrooms ranging from pre-school through high school.Word walls are becoming commonplace in classrooms for all subject areas. High schools teachers use word walls in their respective content areas to teach spelling, vocabulary words, and mathematics symbols.

  4. Kathrein - Wikipedia

    en.wikipedia.org/wiki/Kathrein

    Kathrein-Werke KG is a German manufacturer of antenna systems and related electronics. The company was founded in Rosenheim (Upper Bavaria) in 1919 and is still headquartered there. [1] It is the world's oldest and largest antenna manufacturer, valued at about $1.8 billion in 2015. [2]

  5. Glossary of electrical and electronics engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_electrical_and...

    The CGS unit of magnetic field H. ohm The SI unit of electrical resistance. ohmmeter An instrument that measures electrical resistance. Ohm's law The mathematical relationship between voltage, current, and resistance. one-line diagram A simplified schematic diagram of a power system. on-premises wiring Telecommunications wiring owned by the ...

  6. Electronic packaging - Wikipedia

    en.wikipedia.org/wiki/Electronic_packaging

    Level 2 - Etched wiring board (printed circuit board). Level 3 - Assembly, one or more wiring boards and associated components. Level 4 - Module, assemblies integrated in an overall enclosure. Level 5 - System, a set of modules combined for some purpose. [1]

  7. Moorabbin, Victoria - Wikipedia

    en.wikipedia.org/wiki/Moorabbin,_Victoria

    Moorabbin is a suburb in Melbourne, Victoria, Australia, 15 km south-east of Melbourne's Central Business District, [2] located within the City of Kingston local government area. Moorabbin recorded a population of 6,287 at the 2021 census. [3] Most of the eastern side of Moorabbin has been an industrial area since the first development in the ...

  8. Electronic symbol - Wikipedia

    en.wikipedia.org/wiki/Electronic_symbol

    There is also IEC 61131-3 – for ladder-logic symbols. JIC JIC (Joint Industrial Council) symbols as approved and adopted by the NMTBA (National Machine Tool Builders Association). They have been extracted from the Appendix of the NMTBA Specification EGPl-1967. ANSI Y32.2-1975 (also known as IEEE Std 315-1975 [1] or CSA Z99-1975).

  9. Kilogram - Wikipedia

    en.wikipedia.org/wiki/Kilogram

    The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10 −34 when expressed in the unit J⋅s, which is equal to kg⋅m 2 ⋅s −1 , where the metre and the second are defined in terms of c and Δ ν Cs .