Kai Henningsen wrote:
>
> lauri.tischler@efore.fi (Lauri Tischler) wrote on 21.06.01 in <3B32280A.ADC08780@efore.fi>:
>
> > Richard J Moore wrote:
> > >
> > > > 59.42886726469 ±2°C is obviously ludicrous, even if that's
> > > > what my calculator gives me. I should instead write 59 ±2°C, since
> > >
> > > So, if I follow you argument then shouldn't you be writing 58 ±2°C or
> > > should it be 60 ±2°C ?
> >
> > What it means is that whatever dingus measured the temperature, reported
> > the temperature as 59C.
>
> Well, maybe. And maybe it reported the temperature as "76 units", where a
> unit is approximately 0.69°C, and zero units are approximately 6.99°C, and
> we happen to know the accuracy is 3 units.
>
> (That makes out to 59.43 ±2.07°C, or 57.36 to 61.50°C, whereas 59 ±2°C
> works out to 57.00 to 61.00°C - they do overlap, but they're not the same.
> Now you might not care - but then again, you might care
Oh, shit. +-2C means NO decimals
Any decimal you care to put there are meaningless.
..unless you do integration over extended period of time etc.. etc..
even then if your sensor only gives +-2C diff's ??
--
lauri.tischler@iki.fi * Man created god as His image *
* Man has horrid imagination *
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This archive was generated by hypermail 2b29 : Sat Jun 23 2001 - 21:00:35 EST