Quote:
Originally Posted by herlichka
Does it have anything to do with surface tension? The fluid appears to be sitting "square" in the inclined section of tube, the surface in that section does not seem to lie level.
|
I thought that was neat too. Every commercial inclined manometer that I've seen works like this. Some of them do use oil and change the scale to compensate. But from what I can see, the liquid pretty much stays square in the tube, even in the oil-based gauges. I'm guessing it has something to do with surface tension and pressure on both sides overcoming gravity. That's why when I made the scale for this one I made the lines perpendicular to the tube, so that the water level could be easily read straight across the lines of the scale.