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At 9:35 PM 11/20/95, Jeff Kell wrote:

>I won't hit any personal attacks here, but if you have any knowledge of the
>physics of pressure/stress and the associated engineering collary arguments,
>a square pressure vessel isn't a "brilliant deduction", else tunnels would be
>square, arches would be rectangles, and the golden gate bridge would have no
>need for arches.

I have to admit that I don't personally have much background in mechanical
engineering, but I have a question about this whole line of reasoning anyway
(who said fools couldn't ask questions ;).

The competition for the 'prismatic' pressure vessel is, in this case, a
tube with two flat ends.  Now, I understand the problems with flat sides
on load bearing members, can someone explain why the flat ends on a tubular
system are better than the flat sides of a Dive Rite light?

Thanks,
Scott.

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