• TeckFire@lemmy.world
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    10 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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      10 months ago

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

      • TeckFire@lemmy.world
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        10 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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        10 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
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        10 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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      10 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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        10 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@lemmy.ca
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        10 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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        10 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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        10 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”