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mHz is superior (sh.itjust.works)
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[-] TeckFire@lemmy.world 6 points 10 months ago* (last edited 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.

[-] Amir@lemmy.ml 25 points 10 months ago

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

[-] TeckFire@lemmy.world 9 points 10 months ago* (last edited 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 7 points 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

[-] unlucky@lemmy.world 4 points 10 months ago

By convention, compound SI units (e.g. N•m) are separated by a space or multiplication dot and are not just smashed together. The lack of such a separator in the above example implies the "milli" prefix.

[-] suzune@ani.social 2 points 10 months ago* (last edited 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.

[-] tryptaminev@feddit.de 5 points 10 months ago

Millihertz are used for gravitational waves in Astrophysics.

[-] kuberoot@discuss.tchncs.de 13 points 10 months ago

Pretty sure kilo is lowercase, actually.

[-] TeckFire@lemmy.world 4 points 10 months ago

Son of a bitch, you’re right lmao

[-] psud@lemmy.world 3 points 10 months ago

Big K is Kelvins for temperature

[-] TeckFire@lemmy.world 3 points 10 months ago
[-] psud@lemmy.world 4 points 10 months ago

Sufficient Kelvins do hurt, I guess

[-] IWantToFuckSpez@kbin.social 4 points 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 2 points 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.

[-] frunch@lemmy.world 2 points 10 months ago

Can Hertz be imperial or are they strictly metric?

[-] Phil_in_here@lemmy.ca 9 points 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 4 points 10 months ago* (last edited 10 months ago)

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

[-] FiniteLooper@lemm.ee 4 points 10 months ago

I usually just rent from Enterprise. They pick you up!

[-] psud@lemmy.world 3 points 10 months ago* (last edited 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"

this post was submitted on 21 Jan 2024
285 points (94.1% liked)

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