[SciPy-Dev] Updating constants

Vincent Davis vincent@vincentdavis....
Thu Jun 10 23:54:13 CDT 2010


On Thu, Jun 10, 2010 at 10:38 PM,  <josef.pktd@gmail.com> wrote:
> On Fri, Jun 11, 2010 at 12:11 AM, Vincent Davis
> <vincent@vincentdavis.net> wrote:
>> The current constants in scipy are from 2002, the newest set available
>> are from 2006.
>> Should they be updated, What are the issues with updating with regard
>> to notifying users ie documenting the update.
>
> I thought these are constants. Did they change the value of Pi recently?

They found more digits of Pi :)
I was referring to "Fundamental Physical Constants" scipy.constants.codata
I don't know, it's not easy to compare. I assume there was a reason
they updated the list. There is an Uncertainty value on many of them
so I assume the actual value don't change but our estimate does.

http://physics.nist.gov/cuu/Constants/index.html
release dates 1986, 1998, 2002, 2006

Vincent

>
> just curious: What has changed?
>
> Josef
>
>>
>> Vincent
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