How does a small diameter of the capillary tube of a hydrometer increases it's sensitivity?

Question

How does a small diameter of the capillary tube of a hydrometer increases it's sensitivity?

Answer 1

dunno mate. too busy making coffee and answering normal questions to be bothered

Answer 2

Judge is right, it's to do with specific gravity and volume, the hydrometer would displace the same volume but would have to move further with a smaller capillary hence a different scale can be applied with more graduations making it more accurate.

Answer 3

I don't know what it is you are talking about, but I can tell you that the smaller diameter will give an increased or decreased pressure therefore the reading will be distorted.

Answer 4

The smaller diameter will make the liquid in the hydrometer rise or fall further as it takes up the space available.

This means a scale with smaller intervals can be applied.