Re: Phaethon causing the Dark Ages ?

From: DHObraasch (dhobraasch_at_t-online.de)
Date: 06/24/04 

Date: 24 Jun 2004 08:06:46 -0700

Martyn Harrison <nospam@spammers.of.the.world.unite> wrote in message news:<imsid0dibcql8p1o4hkn6vo2acas440s9g@4ax.com>...
> Apparently on date 23 Jun 2004 02:24:23 -0700, dhobraasch@t-online.de
> (DHObraasch) said:
>
> >Martyn Harrison <nospam@spammers.of.the.world.unite> wrote in message news:<1esbd0ltftdf2veudrahq65r9na9i8cchn@4ax.com>...
> >> Apparently on date 20 Jun 2004 08:20:48 -0700, dhobraasch@t-online.de
> >> (DHObraasch) said:

> This is beside the point, though, I was observing that the object had to be
> able to enter, and leave, the atmosphere. This sets a lower limit to the size
> of the object as, if it is too small, it will simply burn completely up during
> the passage through the air. It also sets an upper limit, too large and the
> object cannot be slowed enough by the air resistance on the surface to be
> brought into an atmosphere crossing orbit around the earth. This is because
> surface area rises with radius squared while mass rises with radius cubed.
>

Thereby somewhere between upper and lower limit there must (?) be
an optimal passage-time with a maximum of heat transfere to the atmosphere.
A matter of quantity.
Thank you for helping me to look a little bit clearer
Regards
Dieter Braasch

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