Yo Ian! On Tue, 25 Apr 2017 13:06:14 -0500 Ian Bruene <[email protected]> wrote:
> On 04/25/2017 12:08 PM, Achim Gratz wrote: > > When talking about precise frequency measurements I would rather > > expect ppt to refer to "parts per trillion". > > Useful note: the units display code shows parts-per-thousand as > "ppk", parts-per-kilo in order to avoid this collision. Can someone find a citation for best practice on parts-per-thousand? Wikipedia says ppt is used in some disciplines for this. https://en.wikipedia.org/wiki/Parts-per_notation An unsatifying compromise is the millage (‰) symbo RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 [email protected] Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can’t measure it, you can’t improve it." - Lord Kelvin
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