Talk:Atmosphere (unit)

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1atm = 1.01325*10^5 ?!?!

—Preceding unsigned comment added by 129.125.180.7 (talk) 19:20, 23 August 2008 (UTC)

<nowiki>Insert non-formatted text here<nowiki>Insert non-formatted text here<nowiki>Insert non-formatted textt5 tttttghere</nowiki></nowiki></nowiki>plz tell me about vacuum rtgggdistillation in detail n vacuum distillation tower for napthenic based crude oils --203.135.37.182 11:47, 28 May 2006 (UTC)nauman

hello i just want to know what is something that is less than 1 atm...203.87.190.46 09:06, 31 December 2006 (UTC)

[edit] Error in definition

Standard Atmosphere is not a unit of pressure! Standard Atmosphere refers to pression of 101 325 Pa. See http://goldbook.iupac.org/S05906.html

Contributions from (user:Mago® - Wiki-pt)

Note the bit on that page where it says "used as unit of pressure with the symbol atm..." --Calair 17:43, 30 April 2007 (UTC)

"Standard atmosphere (symbol: atm) is a unit of pressure". Why not? "as unit of pressure with the symbol" . Contributions from (user:Mago® - Wiki-pt) —The preceding unsigned comment was added by 200.161.58.39 (talk) 23:19, 30 April 2007 (UTC).

I'm really not seeing a meaningful difference between "is a unit of pressure" and "is used as a unit of pressure". --Calair 02:51, 1 May 2007 (UTC)

Hi Calair. The problem is:

"Standard atmosphere (symbol: atm) is a unit of pressure..."

Traduction: Standard atmosphere = unit

Comments: No. Unit = atm, Pa, ºC, ºF, K. The value 101 325 Pa is a pressure used as unit of pressure.

Pressure defined as 101 325 Pa and used as unit of pressure with the symbol atm.

Traduction: Standad atmosphere = Pressure = 101 325 Pa.

Sorry for my bad English. ;(

Hugs from Brazil (Abraços brasileiros)

Mago® - Wiki-pt:

<http://pt.wikipedia.org/wiki/Usu%C3%A1rio:Lemarlou>

Hi Calair.

Standard Atmosphere = 101 325 Pa = Normal.

The normal term means a value at a pressure of 101 325 Pa too.

See:

http://goldbook.iupac.org/N04211.html

Add this information for me in Wiki-en. ;) Thanks

Please... do you speak portuguese? YES ( ) No ( ) ?

)

Greetings from Mago® (Wiki-Pt) <http://pt.wikipedia.org/wiki/Usu%C3%A1rio:Lemarlou>

I don't speak Portuguese, so I don't know if there's a translation problem here, but 'atm' and 'standard atmosphere' are simply different ways of referring to the same unit, in the same way that 'Pa' is an abbreviated version of 'Pascal'. Maybe you're getting confused with SI units? A standard atmosphere isn't a SI unit, but it most certainly is a unit of pressure. --Calair 14:29, 1 May 2007 (UTC)

[edit] Atmosphere as a Unit

It is important to realise that it is an obsolete unit, but still in colloquial use (and on lots of older pressure gauges). For general engineering use there is usually little practical difference between 14 atm and 14 bar, and common gauges are only accurate to 2% FSD (on the day you buy them). Of course for precision work there are instruments and situations for which it matters. Anyone doing such work today would use the bar or pascal. Chemical Engineer (talk) 21:09, 5 September 2008 (UTC)