LeFlaneur
Contributor
Don Burke:Platinum would be more effective, as would osmium.
I use uranium as weight so I don't have to carry a glow stick whilst night diving.
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Don Burke:Platinum would be more effective, as would osmium.
Diver0001:We need more information:
- Is the witch blonde or brunette?
- Is the duck diving Nitrox or air?
- Is it spring or fall...?
R..
A modern submarine has internal trim tanks and external main ballast tanks.The Kracken:I guess you are correct, however, in the fact that the water displaced by the compressed air weighs more therefore the submarine weighs less, given that the water displaced is held internally in the ballast tanks.
The difference between the BC and sub is that that water that displaces the compressed air of the BC is external.
H2Andy:the question:
can you use water as weight, instead of lead weight?
For example, say that you take containers of water instead of lead. Yes, water weights six pounds per gallon, so you would have to take two gallons of water to equal 12 pounds, but...
Say you tie two milk gallons full of water to your waist...
Wouldnt it be the same as wearing lead weights?
We were having this discussion, and someone was saying that wouldnt work, because the water would float on water."
is this correct?
Mercury would be more comfortable. Depleted Urananium would be better for density and as an added bonus you won't need a flashlight anymore after you've used it for a while. Overall though, the head of an old politician might work best. Most dense thing I can think of.Don Burke:Platinum would be more effective, as would osmium.
And what happens if you change the volume of the flexible object with water instead of air?Diver0001:There are two ways of creating buoyancy (positive or negative). You can change the volume of a flexible object (which is how a BCD works) or you can change the mass of a fixed sized object (which is how a submarine works).
In the case that you wanted to make a diver work like a submarine then you would need to create a rigid trim-vest with in itself enough negative buoyancy to sink the diver (approximating a sub) when flooded. Adding air and/or water to the trim-vest would then change the diver's mass and he would sink or float.
In theory.
It would also be interesting to see if such a thing would be more stable than conventional BCD because of the weight distribution.....
R..