Re: SI prefixes with "accepted" units, others

Hello Neil,

On 12/11/2024 09:12, Neil Soiffer wrote:
>> The SI prefixes can be used with several of these units, but not, for
>> example, with the non-SI units of time.
>
>
> That's a little less definitive but does rule out "khr", etc.

Yes. [Also hours are "h", but people persist in using "hr" :)]

> Also, going through the document, I spotted they added four more prefixes
> in 2022:  10^30, 10^27, 10^-27, 10^-30. I updated the issue to include them.

Oh, those, yes - I added them to the LaTeX support back then.

> Unfortunately, as Stephen points out, they also get used when units are
> combined such as kWh (which is really kW⋅h) and abused as kph (should be
> km/h).

Indeed: kWh is very odd as people then want to make derivatives, which
is truly strange.

Joseph

Received on Tuesday, 12 November 2024 10:56:49 UTC