Chris wins! { 8^ )))
Yeah!!! Key word is bouyancy. Concrete ships or flies, displacement is
the physics.
Surface tension is the 'vehicle' by which a fly is displacing water, not
absorbing it- as would be a hole in the hull of the ship. The weight of the
volume of water in the 'dent' in the surface of the water caused by the fly
is equal to the weight of the fly. If a ship weighs more than the pocket of
water it displaces, it sinks.
What helps is that once the fly is wet and under the water, it weighs less.
Huh?
Over...
DonO
----- Original Message -----
From: "Chris Broomell" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, November 13, 2002 7:51 AM
Subject: Re: [VFB] Dry Flies 102
> Can't be just an issue of mass. This has to do with weight (which is
> different) and/or density. No matter what the mass is, if it's
distributed
> such that the forces involved in maintaining surface tension aren't
> overcome...the fly will float. Even if the hook breaks the surface film
it
> can still float if the total weight of the hook/feathers/fur/water
absorbed
> by the fly is LESS than the weight of the volume of water displaced by the
> fly. Floatant helps...it keeps the fly from absorbing water (allows less
> weight distribution to bug and helps to maintain "exclusion" from the
> surface film).
>
>
>
> >Then why to ships made of cement float? When you consider the simple
fact
> >that any hook has enough mass to break the surface film. The foot print
> >must be large enough do distribute the mass so the surface film is not
> >broken
>
