Kallog
You can't adjust the bouyancy to be exactly neutral so it'll always be trying to go up to the top or down to the bottom. You can keep it at a fixed depth by increasing the density when it starts floating up, and reducing it when it starts sinking.
it'll always be trying to go up to the top or down to the bottom.
so if a submarine is at near neutral buoyancy , and it could be adjusted to remain at near neutral buoyancy but is not adjusted then it begins to drop to the bottom.
how far will it drop before it will stop , or will it just keep going?
or if it begins to go up to the top , how far will it go up?
you seem to think that the waters density will change at a certain depth , but I dont think so.
if the subs density does not change and the waters density does not change , then why would it rise or fall?
in the thermometer the density is changed by temperature
however the thermometer would not work if there were no air above the water that would allow for the compression of the water thus allowing the change of density.
when I said that it is the temperature and pressure inside
the thermometer that is the reason it works I was right.
without the air at the top it wouldnt work.
you couldnt change the density of the water without the air.
the only reason the density changes is because of the temperature , and the pressure is the result of the temperature.
the density is the result of the reason why it works.
what you are saying is sort of like saying my car wrecked itself.
I was not at fault because I was only driving the car.
