On 30 Mar 2014, at 23:07, Dirk Hohndel <d...@hohndel.org> wrote:
>
> Tried to talk to you on IRC, but let's repeat here:
>
> + entry->ead = (entry->depth + 10000) * (1000 - fhe) / 1000.0 -
> 10000;
> + entry->end = (entry->depth + 10000) * (1000 - fo2 - fhe) /
> (double)N2_IN_AIR - 10000;
>
> That first one is the definition of END, the second one the definition
> of EAD. What am I missing?
>
> /D
Dirk,
now I am confused. I have to admit, I had not heard about the distinction of
the two before (I had only used the “the depth that has the the same partial
pressure of N2 when using air” whatever that is called).
Do you agree with the two comments before those lines (that I did not touch):
* EAD takes O2 + N2 (air) into account
* END just uses N2 */
Those are in agreement with
http://lists.hohndel.org/pipermail/subsurface/2013-January/002411.html
Maybe it is too late at night for me but it still seems to me that
+ entry->ead = (entry->depth + 10000) * (1000 - fhe) / 1000.0 -
10000;
+ entry->end = (entry->depth + 10000) * (1000 - fo2 - fhe) /
(double)N2_IN_AIR - 10000;
exactliy represents that.
Best
Robert
--
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Robert C. Helling Elite Master Course Theoretical and Mathematical Physics
Scientific Coordinator
Ludwig Maximilians Universitaet Muenchen, Dept. Physik
print "Just another Phone: +49 89 2180-4523 Theresienstr. 39, rm. B339
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