Bug 112005 - some isotope rates don't add up to 100%
Summary: some isotope rates don't add up to 100%
Status: RESOLVED FIXED
Alias: None
Product: kalzium
Classification: Applications
Component: general (show other bugs)
Version: 1.3.1
Platform: unspecified Linux
: NOR normal
Target Milestone: ---
Assignee: Kalzium Developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2005-09-04 00:12 UTC by Daniel Franke
Modified: 2008-08-05 19:49 UTC (History)
0 users

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Description Daniel Franke 2005-09-04 00:12:14 UTC
Version:           1.3.1 (using KDE 3.4.2, Gentoo)
Compiler:          gcc version 3.3.5-20050130 (Gentoo 3.3.5.20050130-r1, ssp-3.3.5.20050130-1, pie-8.7.7.1)
OS:                Linux (i686) release 2.6.11.11

Some isotope rates don't add up to 100%:

Helium:     99.99993%
Neon:       99.97000%
Sulfur:    100.05600%
Potassium:  99.98810%
Krypton:    99.69000%
Mercury:     6.87000%  (??)

Probably more, didn't check all of them.
Comment 1 cniehaus 2005-09-05 10:54:31 UTC
J
Comment 2 Daniel Franke 2005-09-05 11:46:32 UTC
Sorry, can't provide any data. I was just browsing kalzium and for all I know, percentages should add upp to 100%, especially mercury falls quite short.

I'd suggest to round the available percentages to one significant digit (instead of 5 digits for some elements). If there are isotopes whose percentages are less than 0.1, indicate this by using "< 0.1%" (as e.g. done in statistical software packages if they can't determine a more accurate value).

I wouldn't expect anyone to object if some percentages are rounded or just chopped of. in my eyes, it's more obvious if the overall count doesn't sum up to 100% than that the percentage of isotope XY is actually 34.335 instead of 34.3 ... 


Comment 3 Carsten Niehaus 2005-09-05 14:46:54 UTC
This is what Jörg Buchwald posted on the kalzium-mailinglist (kalzium@kde.org). If you have question, tips or suggestions for Kalzium just mail it to that mailinglist.

From Jörg:

> Mercury:     6.87000%  (??)
I get 100.006 percent.

The reason is that there are different data in literature, so theese
are statistic values, which can't determined exactly. In some
individual cases it could be that some nuclides are missing. But i'll
check it soon.
Comment 4 Daniel Franke 2005-09-06 09:58:57 UTC
The list of isotopes of mercury as displayed in 1.3.1:

Weight   Neutrons    Percentage
195.97     116          0.15
203.97     124          6.72

From kalziumrc:
Isotopes=116:195,97:0,15;124:203,97:6,72
Comment 5 Carsten Niehaus 2006-02-19 14:57:55 UTC
Can't this bug be closed? We moved the isotope-data to Blueobelisk.org anyway... Jörg?
Comment 6 Pino Toscano 2006-02-19 15:09:30 UTC
> Can't this bug be closed? We moved the isotope-data to Blueobelisk.org
> anyway...


Yes, but the old data still remain in the 3.5 serie...
Comment 7 Carsten Niehaus 2006-03-07 17:52:06 UTC
> Yes, but the old data still remain in the 3.5 serie...

Correct. Jörg: It would be possible to convert the improved data in BlueObelsik back to Kalzium, right? We would just need a xml-3.5-writer, the reader of the BO-Obelisk is already in trunk. The xml-3.5-writer could be a quick hack. That way, we would just do one huge commit to the database of KDE 3.5.
Comment 8 Carsten Niehaus 2008-08-05 19:49:04 UTC
I resolved this "fixed" because it is fixed in 4.x and will never be fixed in 3.x as it would introduce quite some new code there.