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Re: [PSUBS-MAILIST] Re: Welcome to the Personal_Submersibles_Disc ussion
Please not that the balloon's passenger has been put on a rather
dramatic "diet". The aluminum can is putting it's occupant on a
similar "diet", i.e. crushing by reduction in volume to equalize
pressure.
Warren.
> In a message dated 1/27/03 3:15:47 PM Pacific Standard Time,
> emm03@mirapoint.uow.edu.au writes:
>
>
> > Sounds scary...I suggest you test this hull to a few times
> > operating depth before you get inside it...........just to
> > make sure you have it right..
> > EM.
> >
>
> Hey EM,
>
> Scary because you are operating from a particular design perspective, but not
> the only one.To demonstrate this, here's a question:
>
> When is rubber stronger than metal? Answer:
>
> At the bottom of the ocean. Take a rubber balloon and a soda can to the
> bottom of the sea and the balloon (though smaller) is intact, yet the can is
> flattened. Why? Obviously because the balloon was elastic and was able to
> shrink under the pressure. What I have designed provides mechanical
> elasticity, not that the hull actually changes shape, just how the pressure
> differential is interpreted. In theory, a paper bag could withstand the
> pressures of the deep seas utilizing this process.
>
> anyways, thanks for inquiring,
>
> jeffrey
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