• TeckFire@lemmy.world
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      5 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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        5 months ago

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

        • TeckFire@lemmy.world
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          5 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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          5 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

        • Suzune@ani.social
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          5 months ago

          No one uses millihertz and neither meterhertz. If you want to do it correctly the first one would be acceptable for milli as scale. The second one would need to be written as m • Hz.

      • IWantToFuckSpez@kbin.social
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        5 months ago

        All metric unit prefixes are possible. Like femtohertz, picohertz, centihertz, decihertz, decahertz, hectohertz, petahertz, zettahertz. Not sure if they are used often.

        • snugglesthefalse@sh.itjust.works
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          5 months ago

          Well Hz is a frequency per second. It doesn’t make much sense to use them for low frequency things but it’s still possible. Just most things that happen less than once per second are usually described in units like seconds, hours and more.

        • Phil_in_here
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          5 months ago

          I think there’s something like 43/500ths of a Bigole Hertz to a regular Hertz; but that’s if you’re using English Bigoles. I think it’s 43.9/500ths for a US Bigole.

        • lolcatnip@reddthat.com
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          5 months ago

          I’m American and I’ve never seen any other unit used for frequency unless you count adjectives like “daily”.

        • psud@lemmy.world
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          5 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”