Talk:Thomson: Difference between revisions

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The thomson is a unit, whereas ''m/z'' is a quantity.
Therfore, the thomson would not replace ''m/z''.
Instead, the dimensionless ''m/z'' would be replaced
with ''m/q'' which has the unit '''Th'''.


:''m/q'' = n '''Th'''
where
* ''m/q'' is the symbol for a quantity of mass/charge
* n is the numerical value of the quantity ''m/q''
* '''Th''' is the symbol for the unit thomson
''Example:''
* The base peak of H2O appears at 18 thomson.
== Suggested Definition ==
New format - suggested definitions to appear in Discussion tab:
{| border="2" cellpadding="10" cellspacing="0" align="center"
|-
! style="background:#66ff66;" | Thomson
|-
| A new [[Wikipedia:physical unit|unit]] of the [[Wikipedia:physical quantity|physical quantity]] mass/charge.  The symbol ''m/q'' would then be used in place of the dimensionless [[m/z]].
Cooks, R. G. and A. L. Rockwood (1991). "The 'Thomson'. A suggested unit for mass spectroscopists." Rapid Communications in Mass Spectrometry 5(2): 93.
"The Thomson (Th), a unit for mass-to-charge ratio, was proposed to alleviate problems with imprecise terminol. generated by the advent of multiply charged ion [[mass spectroscopy]]. The definition proposed for the unit is: 1Th == 1 [[amu]]/atomic charge."
"The Thomson (Th), a unit for mass-to-charge ratio, was proposed to alleviate problems with imprecise terminol. generated by the advent of multiply charged ion [[mass spectroscopy]]. The definition proposed for the unit is: 1Th == 1 [[u]]/atomic charge."
|-
| ''This is a Suggested Definition and should only appear under a discussion tab. Note that more than one suggested definition can appear in one discussion''
|}
== Moved from Front Page ==
''' [[Mass Spec Desk Reference]] '''
See [[Mass Spec Desk Reference]] page 27 for an argument against the adoption of this term.
--[[User:Kkmurray|K. Murray]] 21:42, 17 Jan 2005 (CST)

Latest revision as of 16:22, 13 April 2014