Douglas Butler wrote, in part:
>[...]
>Fiberglass isn't much of a heat
>conductor.  But it is much better than air.

Well, it is true that if you only consider true *conduction*,
air is very poor at transporting heat (this is why a down
sleeping-bag is so warm: those little feathers keep the air
from moving, so it can only conduct heat away). But if there
is room for the air to move, then *convection* can be a very
efficient heat transport mode. This is, after all, how a
conventional heat sink ultimately sheds its heat in most cases:
it presents a large surface area to the air, which convects
the heat away.

At least, that's what I think. I could be wrong, I'm only a
humble physicist and not a real electrical engineer.

Michael V

Thank you for reading my little posting.


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