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  2. Characteristic impedance - Wikipedia

    en.wikipedia.org/wiki/Characteristic_impedance

    The characteristic impedance of an infinite transmission line at a given angular frequency is the ratio of the voltage and current of a pure sinusoidal wave of the same frequency travelling along the line. This relation is also the case for finite transmission lines until the wave reaches the end of the line. Generally, a wave is reflected back ...

  3. International System of Units - Wikipedia

    en.wikipedia.org/wiki/International_System_of_Units

    The International System of Units, internationally known by the abbreviation SI (from French Système international d'unités ), is the modern form of the metric system and the world's most widely used system of measurement. Coordinated by the International Bureau of Weights and Measures (abbreviated BIPM from French: Bureau international des ...

  4. Germany - Wikipedia

    en.wikipedia.org/wiki/Germany

    The English word Germany derives from the Latin Germania, which came into use after Julius Caesar adopted it for the peoples east of the Rhine. The German term Deutschland, originally diutisciu land ('the German lands') is derived from deutsch (cf. Dutch), descended from Old High German diutisc 'of the people' (from diot or diota 'people'), originally used to distinguish the language of the ...

  5. Simplified molecular-input line-entry system - Wikipedia

    en.wikipedia.org/wiki/Simplified_molecular-input...

    The simplified molecular-input line-entry system ( SMILES) is a specification in the form of a line notation for describing the structure of chemical species using short ASCII strings. SMILES strings can be imported by most molecule editors for conversion back into two-dimensional drawings or three-dimensional models of the molecules.

  6. Equatorial coordinate system - Wikipedia

    en.wikipedia.org/wiki/Equatorial_coordinate_system

    Model of the equatorial coordinate system. Declination (vertical arcs, degrees) and hour angle (horizontal arcs, hours) is shown. For hour angle, right ascension (horizontal arcs, degrees) can be used as an alternative. The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.

  7. 7-Zip - Wikipedia

    en.wikipedia.org/wiki/7-Zip

    7-zip ZS is a fork with Zstandard and various other compression algorithms added to the file format. p7zip-zstd (p7zip with zstd) is p7zip with ZS additions. NanaZip is a fork integrating changes from many sources, modernized for the Microsoft Store. Plugins. 7-zip comes with a plug-in system for expansion.

  8. Generation Z in the United States - Wikipedia

    en.wikipedia.org/wiki/Generation_Z_in_the_United...

    Generation Z (or Gen Z for short), colloquially known as Zoomers, is the demographic cohort succeeding Millennials and preceding Generation Alpha.. Members of Generation Z were born between the mid-to-late 1990s and early 2010s, meaning the first wave came of age during the second decade of the twenty-first century, a time of significant demographic change due to fertility differentials and ...

  9. Control system - Wikipedia

    en.wikipedia.org/wiki/Control_system

    The definition of a closed loop control system according to the British Standards Institution is "a control system possessing monitoring feedback, the deviation signal formed as a result of this feedback being used to control the action of a final control element in such a way as to tend to reduce the deviation to zero."