Re: [Phys-L] physics and football

[Paul Nord <paul.nord@valpo.edu>]

Moisture content of the air in the balls could change this dramatically also.  Wet air is not a very ideal gas.

I wonder how quickly they deflate if you fill them with helium, or some other gas to which the skin will be more permiable.

Paul


> On Jan 22, 2015, at 6:55 PM, John Denker <jsd@av8n.com> wrote:
>
> On 01/22/2015 05:25 PM, Anthony Lapinski wrote:
> > I plan to show this to my students when I teach fluids to see if they can
> > find the error.
>
> "THE" error?
>
> The whole premise of the article seems to be based
> on wildly erroneous physics.
>
> Many of the errors could be explained if Prof. Schmaltz
> dropped a factor of 2.2, presumably degrees C versus F.
>
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