There is some inconsistency in the standard prefixes. See
http://www.bipm.org/en/si/prefixes.html. m, M, p, P, y, Y, z, Z with
appear as upper and lower case, with different meanings, but not k (and
also not several others).
In general lower case prefixes indicate multipliers less than unity, and
upper case prefixes indicate multipliers greater than unity; but 'da'
(deca-), 'h' (hecto-) and 'k' (kilo-) are exceptions in that they are
lower case but still indicate multipliers greater than unity
(respectively x10^1, x10^2 and x10^3)
The Bureau International des Poids et Mesures (BIPM) is the ultimate
reference and authority for the SI system.
See also https://en.wikipedia.org/wiki/Metric_prefix for a clearer (but
less authoritative) explanation.
Gerard Lardner
On 07/04/2013 02:29, umashankar manthravadi wrote:
always thought only m has both cases. m - millliwatt, and M - megawatt, for
example. umashankar
> Date: Sat, 6 Apr 2013 10:41:49 -0600
From: [email protected]
To: [email protected]
Subject: Re: [Sursound] Surround formats and lossy compression
Eric Carmichel wrote:
...
Are all lossless formats more-or-less equal in
terms of 'purity'.
Eric B has already addressed this; lossless
means lossless.
...
Unlike kilohertz (kHz), the K is capitalized when
referencing kilobytes (KB) or kilobits (Kb).
In SI unit prefixes there is only a lowercase k.
A capital K, even if popular, is wrong.
Regards,
Martin
--
Martin J Leese
E-mail: martin.leese stanfordalumni.org
Web: http://members.tripod.com/martin_leese/
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