+- HP Forums (https://www.hpmuseum.org/forum)
+-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html)
+--- Forum: HP Prime (/forum-5.html)
+--- Thread: Units; StdP value vs. non values (/thread-6227.html)
Units; StdP value vs. non values - toshk - 05-09-2016 06:13 PM
StdP; non value 101.325_kPa. Correct
StdP; value 101.325. trick question or what?
StdP; value 101.325E3. That is the true value!! 760mmHg
RE: Units; StdP value vs. non values - Tim Wessman - 05-09-2016 06:46 PM
(05-09-2016 06:13 PM)toshk Wrote: StdP; non value 101.325_kPa. Correct
StdP; value 101.325. trick question or what?
StdP; value 101.325E3. That is the true value!! 760mmHg
Actually, it has been this way even back to the 48 series. The constant lib there returns a value of 101.325 when you don't have units attached. When you are not using units, the assumption is just that in the end you interpret as kPa. I remember looking at this extensively and talking to a few physics/chemistry professors before deciding to match what was done before.
I'm open to change it, but the behavior does seem to make sense in actual practice.
RE: Units; StdP value vs. non values - toshk - 05-09-2016 07:38 PM
On the historical level, I can't battle the staunch members( RPN CLINCHERS ) of this noble forum.
But "value" here is "magnitude",standard is standard. Standard pressure is 760mmHg is 101325_Pa. And not 101.325 you have to append kilos later in your calculations later.
CONVERT(760_mmHg,1_Pa)
RE: Units; StdP value vs. non values - Tim Wessman - 05-09-2016 11:17 PM
(05-09-2016 10:23 PM)informach Wrote: Hi!:
[snip off topic information]
The discussion is not about how to do unit conversions. It makes it very hard for people to follow discussions when you post non-topic discussions in every single thread. Could you please post only on topic things directly related to the discussion?
Thank you!
RE: Units; StdP value vs. non values - informach - 05-09-2016 11:31 PM
Hi!, Tim:
I have, the feeling, that I was wrong, in the response. It's for this reason, that I erased, what had inserted. Obviously, I wanted to clarify the units, used for years, in my profession, of oil and gas engineering and has, HP PRIME for me, is enough.
Kind Regards.
informach.