• TeckFire@lemmy.world
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      11 months ago

      nHz is Nanohertz 1/1,000,000,000 Hz (Billionth)

      µHz is Microhertz 1/1,000,000 Hz (Millionth)

      mHZ is Millihertz 1/1,000 Hz (Thousandth)

      Hz is Hertz 1 Hz (Base Unit, one per second)

      kHz is Kilohertz 1,000 Hz (Thousand)

      MHz is Megahertz 1,000,000 Hz (Million)

      GHz is Gigahertz 1,000,000,000 Hz (Billion)

      THz is Terahertz 1,000,000,000,000 Hz (Trillion)

      I suppose there are probably more that I’m not aware of, but I hope this clears it up.

      • ඞmir@lemmy.ml
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        11 months ago

        No, that absolutely does not resolve the confusion between meter (m) and milli (m)

        • TeckFire@lemmy.world
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          11 months ago

          I feel like a dumbass

          I totally read your comment as “Megahertz or Millihertz”

          Now I realize it should just be Meters•Herts or m•Hz

        • psud@lemmy.world
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          11 months ago

          Standing alone ‘m’ is metre.

          With a decimal modifier ahead of it, ‘m’ is metre

          Immediately before a symbol it is milli (one thousandth)

          mm - the first m is before the metre symbol, it is the milli multiplier, the second m is after a multiplier, so it is the symbol for metre

          mHz - the m is before the symbol Hz (for Hertz) so it is the milli multiplier

          km - the m is after the K (kilo, thousand times) multiplier, so it is metre

          You probably spell metre ‘meter’, but a meter is a whole different word in English

        • psud@lemmy.world
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          11 months ago

          RPM (revolutions per minute) is an old rotational measure

          But the second is the same in both systems so I wouldn’t be surprised if America called revs per second “Hertz”