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'? **
Feels tight. When I squeeze water goes up the veticle tube and the air column to the left of the red fluid (far end) shrinks. When I release the pressure on the bottle the verticle tube bring air into the sytem and cuases bubbles.
** Length of the air column in units of your measuring device: **
I used the singly reduced. While I do not require glasses or contacts to try to claibrate movement visually on anything less than that would be a stretch.
** 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. **
29.5 units. I started at unit 1 and it extended to unit 30.5. So I subtracted back out the 1 and wound up with 29.5.
** 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. **
17cm
29.5
19.5, 20.0
19.5, 20.0
19.5, 19.8
19.5, 19.8
19.5, 20
** 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. **
18cm
29.5
19.5, 20.0
19.5, 20.0
19.5, 20.1
19.5, 20.3
19.5, 20.3
** 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. **
26cm
29.5
19.5, 20.6
19.5, 20.5
19.5, 20.5
19.5, 20.6
19.5, 20.6
** **
22cm
29.5
19.5, 20.3
19.5, 20.4
19.5, 20.3
19.5, 20.4
19.5, 20.3
Good work on Part 1.