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Originally Posted by davis.1841  Thanks Swifty, I was just wondering if there is any efficiency difference between the two designs. It looks to me that one of them has more air space inside. It seems to me that a larger internal air space would slow down the color change time, but I'm sure surface area is a bigger factor. Surface area of the tank water interacting with the air in the drop checker and surface area of the indicator solution. I'm glad to hear that my suspicions are either false or this just is too small of a scale for it to really have an effect. |
Logically I would expect the fastest reaction from one with a large area of contact between the tank water and the air gap, and, because the amount of water in the bulb is so small, the area of contact between the bulb water and the air gap would be a secondary factor. I'm not sure, but I doubt that the length of the air gap would enter into it. But, a large air volume would seem to slow it down. I don't know anything about the equations that would govern the rate at which equilibrium is reached between a pocket of air in contact with water, so intuition is all I have to go on.