unless the differeing heat exchange of the metal causes ot to build
frost from the vapor dissapearing from the ground.  ive seen that
effect with railings here in arizona in the dry dry winters.

On Mon, Aug 25, 2008 at 3:35 PM, Horace Heffner <[EMAIL PROTECTED]> wrote:
>
> On Aug 25, 2008, at 12:26 PM, Harry Veeder wrote:
>
>>
>> could that be frost?
>>
>> harry
>
>
> Could be, but it seems to me unlikely, given there is no frost on anything
> else. A very light morning frost does occur on the ground there at times.
>  If anything, the "before" picture looks like the ground is lighter, so it
> should have the frost.
>
> Best regards,
>
> Horace Heffner
> http://www.mtaonline.net/~hheffner/
>
>
>
>
>

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