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  2. Guitar tunings - Wikipedia

    en.wikipedia.org/wiki/Guitar_tunings

    Standard tuning (listen) Guitar tunings are the assignment of pitches to the open strings of guitars, including classical guitars, acoustic guitars, and electric guitars. Tunings are described by the particular pitches that are made by notes in Western music. By convention, the notes are ordered and arranged from the lowest-pitched string (i.e ...

  3. 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 ...

  4. Academic grading in the United States - Wikipedia

    en.wikipedia.org/wiki/Academic_grading_in_the...

    Papua New Guinea. v. t. e. In the United States, academic grading commonly takes on the form of five, six or seven letter grades. Traditionally, the grades are A+, A, A−, B+, B, B−, C+, C, C−, D+, D, D− and F, with A+ being the highest and F being lowest. In some cases, grades can also be numerical. Numeric-to-letter-grade conversions ...

  5. Bass guitar tuning - Wikipedia

    en.wikipedia.org/wiki/Bass_guitar_tuning

    The standard design for the electric bass guitar has four strings, tuned E, A, D and G, in fourths such that the open highest string, G, is an eleventh (an octave and a fourth) below middle C, making the tuning of all four strings the same as that of the double bass (E 1 –A 1 –D 2 –G 2). This tuning is also the same as the standard tuning ...

  6. Marks' Standard Handbook for Mechanical Engineers - Wikipedia

    en.wikipedia.org/wiki/Marks'_Standard_Handbook...

    Marks' Standard Handbook for Mechanical Engineers. Marks' Standard Handbook for Mechanical Engineers is a comprehensive handbook for the field of mechanical engineering. Originally based on the even older German Hütte, it was first published in 1916 by Lionel Simeon Marks. In 2017, its 12th edition, published by McGraw-Hill, marked the 100th ...

  7. Employment and Support Allowance - Wikipedia

    en.wikipedia.org/wiki/Employment_and_Support...

    Employment and Support Allowance. Employment and Support Allowance ( ESA) is a United Kingdom welfare payment for adults younger than the State Pension age who are having difficulty finding work because of their long-term medical condition or a disability. It is a basic income-replacement benefit paid in lieu of wages.

  8. 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.

  9. Standard tuning - Wikipedia

    en.wikipedia.org/wiki/Standard_tuning

    Guitar standard tuning (written an octave higher than it sounds). D/F♯ slash chord Play ⓘ. Guitars and bass guitars have more standard tunings, depending on the number of strings an instrument has. six-string guitar (the most common configuration) – E 2 A 2 D 3 G 3 B 3 E 4 (ascending perfect fourths, with an exception between G and B ...