Re: [PSUBS-MAILIST] Re: Viewport Toughness

[Coalbunny <coalbunny@vcn.com>]

Yes, it is a good idea.  And I'd love to learn more about that film.
Carl


Michael B Holt wrote:
> 
> On Mon, 06 Oct 2003 13:32:39 -0600 Coalbunny writes:
> >I don't know about it making the glass or arcrylic "bullet proof".
> 
> I've seen windows that were hit but not penetrated.   It's possible
> to make a window bulletproof, but I don't that relates in any way
> to submarine viewports.  Glass made bulletproof is glass made
> resistant to one impact on a tiny point.   A window that's taken a
> bullet is probably not going to  survive a second impact.
> 
> Viewports have to be proof against  pressure over their entire face,
> and for a long time.
> 
> On the other hand, what can we learn from the idea?
> 
> --------------------------------------------------------------------------------------
> It is possible to make a Ship or Boate that may goe underwater
> unto the bottom, and so to come up againe at your pleasure ...
>                                                                       -
> William Bourne, 1576
> ----------------------------------------------------------------------------------------
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