In article >,
notbob > wrote:

> On 2009-09-15, Melba's Jammin' > wrote:
>
> > What is a "Dewar of liquid nitrogen"? IMWTK.
>
> Liquid nitrogen is that super cold liquid that instantly freezes
> grapes so they shatter like glass.

Yup, I knew that part.

> A dewar is basically just a big
> thermos bottle that keeps the LN from boiling away for a couple hours.
> If LN hits anyting at room temp, it boils off like a bead of water on
> a red hot skillet.
>
> nb

Thanks, nb.
--
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newsatfour/newsatfour_article.aspx?storyid=823232&catid=323>