Your 'measuring atmospheric pressure' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** your comment **
** How does the system behave and how does it 'feel'? **
Water in the vertical tube rises. The water column in the pressure-indicating tube moves right when squeezing and returns when releasing.
** Length of the air column in units of your measuring device: **
I used the triply reduced rulers because it has the greatest precision.
** Your report of the vertical position of the first mark relative to the water surface of the first mark, the length of the air column in units of your selected measuring device, and the two meniscus positions observed with each of your five trials. **
67 trcm
The measurements were from 99-58 and from 49-23 on each ruler. Adding the differences, I arrived at the length.
** Your report of the vertical position of the second mark relative to the water surface of the first mark, the length of the air column in units of your selected measuring device, and the two meniscus positions observed with each of your five trials. **
10
66.8
33.8,33.0
33.8,33.0
33.8,33.0
33.8,33.0
33.8,33.0
** Your report of the vertical position of the highest mark relative to the water surface of the first mark, the length of the air column in units of your selected measuring device, and the two meniscus positions observed with each of your five trials. **
20
66.8
33.8,32.2
33.8,32.2
33.8,32.2
33.8,32.2
33.8,32.2
** Your report of the vertical position of the 'in-between' mark relative to the water surface of the first mark, the length of the air column in units of your selected measuring device, and the two meniscus positions observed with each of your five trials. **
70
66.4
33.4,28.5
33.1,28.5
33.0,28.5
33.0,28.5
33.1,28.4
** **
50
66.3
33.3,29.7
33.3,29.7
33.3,29.7
33.3,29.7
33.3,29.7
These data look good.