[GZG] Pressures

["Richard CJ" <rcj@xxxxxxxxxxxx>]

Roger Books wrote -

> The biological that live deep in the ocean don't deal with the pressure by
> maintaining a different pressure outside as inside.   They are equalized
> inside and out.

> You could inflate a balloon at the deepest spot in the ocean and it would
be fine.
> If you inflate the same balloon in space it would pop.

Is it actually that simple?

Presumably, to inflate a balloon at the deepest spot in the ocean you're
going to need an awful lot of pressure to exceed the external pressure to
stretch the balloon until the elasticity of the balloon prevents further
expansion..

Conversely, if you inflate a balloon in space you need a lot less pressure,
and there must still be some point at which the balloon is strong enough to
contain the requisite pressure.

After all, the difference between pressure at sea level and that at the
bottom of the oceans is massive, whereas between sea level and space is one
atmosphere.

CJ


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