[sdiy] Wavetable info

[Magnus Danielson]

From: KA4HJH <ka4hjh at gte.net>
Subject: Re: [sdiy] Wavetable info
Date: Sat, 3 Jan 2004 02:29:07 -0500
Message-ID: <p05111a05bc1c1f75fc01@[67.200.137.77]>

> >> > For instance, a k means the kilo prefix, where as K means Kelvin.
> >>
> >> Whilst true I have always thought that this does make for some
> >> confusion. I think K is the only multiplier over 1 that exists in the
> >> lower case. G, M and T being the most common others. Also annoying for
> >> the unwary, the kg is a base unit and not the gramme.
> >
> >Yes, this IS an annoying detail and inconsistency. By the time that things
> >where put into a even more structured order a few things where to late to fix.
> >However, this inconsistency is well documented and the appropriate format is
> >international standard.
> 
> Just glancing over the document Magnus sent me I see that hecto and deca
> are lowercase. Not that I use them very often...

I think deca is the least used of the classical units where as I have actually
seen exa, peta, tera, giga, mega, kilo, hecto, deci, centi, mili, micro, nano
pico, femto and atto in use. Yotta, Zetta, zepto and yocto is more recent and
I don't think they've come into wide use yeat, but I would expect them to come
into use in nuclear-related sciences and chemistry since the scale is small.

For instance, the unified atomic mass unit u = 1,660 540 2 x 10^-27 kg but
this we can also write as 1,660 540 2 yg (y = 10^-24, the k being dropped).

Cheers,
Magnus