Re: [Phys-L] icy roads

[rjensen@ualberta.ca]

From the article
http://gizmodo.com/screw-salt-wisconsin-is-de-icing-its-roads-with-cheese-1468422497

"While regular salt brine freezes at six below zero, cheese brine
doesn't freeze until 21 below zero, ..."

After confirming that the brines are predominantly NaCl, I was
confused until I realized that -6 °F = -21 °C

Like the Gimli Glider and Mars Climate Orbiter, the authors of this
article are confusing metric and imperial units. Is this purposeful to
falsely promote Wisconsin cheese brines, or simple ignorance?

 Dr. Roy Jensen
(==========)-----------------------------------------¤
 Lecturer, Chemistry
 W5-19, University of Alberta
 780.248.1808



On Wed, 17 Feb 2016 14:20:14 -0500, you wrote:

> While I was teaching phase changes today, a student mentioned this
> article. I didn't believe him, so he sent me the link:
>
> http://gizmodo.com/screw-salt-wisconsin-is-de-icing-its-roads-with-cheese-1468422497
>
> Anyone live in Wisconsin?
>
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