On 13 Jan 2004 13:38:38 +0000, Katherine Inskip
<kji@mraosa.ra.phy.cam.ac.uk> wrote:
>mostly harmless <tulwinn@OBVIOUSblueyonder.co.uk> writes:
>
>> On Tue, 13 Jan 2004 11:15:50 -0000, Hartley Patterson
>> <hpttrsn@daisy.freeserve.co.uk> wrote:
>
> >> Christina Marie Thompson:
> >>> Someplace in an official canon, I've seen it mentioned that
> >>> Thread only falls in the day. I'm not sure the physics on this
> >>> as this would imply it only comes to Pern from the sunward
> >>> direction.
> >> The air temperature is low enough at night to kill Thread as it
> >> falls.
>
>> But surely having been in space they have experienced much
>> lower temperatures that a Pernese night.
>
>I still disagree that air temp would stop night-time thread falls, but
>this argument doesn't wash.
>
>Thread in space consists of harmless "spores", which get heated up on
>entering Pern's atmosphere, burning off the outer layers and producing
>the flesh-eating thread that we all know and love.
doh, ok I forgot about that, but still the temperature at night can
be quite warm in summertime.
>We do know that this form of thread *can* freeze in the coldest of
>conditions, producing black crack-dust. Night-time temperatures don't
>normally get this cold for the majority of Pern (although I think we
>can rule out winter night-time falls in the higher latitudes on this
>basis).
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