Mnemonic/Catalogs/List of mnemonics in English

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Mathematics

  • Sin = Obtuse / Hypotenuse; Cosine = Adjacent / Hypotenuse; Tangent = Obtuse / Adjacent
    • SOH CAH TOA

Science

  • The colors of the rainbow: red, orange, yellow, green, blue, indigo and violet.
    • Richard of York gave battle in vain.
  • Order of the planets: "Mother very thoughtfully made a jelly sandwich under no protest"
    • Mercury, Venus, Terra, Mars, Asteroids, Jupiter, Saturn, Uranus, Neptune, Pluto

Engineering

  • The color code on electronic resistors: "Bad boys ravish our young girls but Violet goes willingly:
    • Black=0, Brown =1, Red = 2, Orange = 3, Yellow = 4, Green = 5, Blue = 6, Violet = 7, Gray = 8, White = 9