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 **
Good Morning David.
Took the day off to hopefully complete some of my unfinished lab asignments.
I know that you are probably extremely busy; however, if you could at your convenience;let me know where my difficiencies are with lab assignments. I have recognized several assignments that I still need to complete; but I just want to make sure that I have identified them all.
** How does the system behave and how does it 'feel'? **
As I increase the pressure in the bottle by squeezing it; the pressure tube's air column shortens, and the vertical tube fills with water.If I pulse the water in the bottle, the vertical tube, and the pressure tube liquid pulses respectively.
** Length of the air column in units of your measuring device: **
Single 20%
The single 20% reduced measuring device allows for enought precision for the purpose of this experiment without sacrificing accuracy through distortion.
** 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. **
8cm @ single 20%
I simply measured the distance from the meniscus to the cap. I started with 10cm so that it would be closer to the center of the page to reduce distortion, and measured out to the 18cm distance at the cap.
** 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. **
32cm
8
10, 10.2
10, 10.2
10, 10.2
10, 10.2
10, 10.2
As the pressure in the tube increases so that the water in the vertical tube can be elevated to the first mark at 32cm; the air column in the pressure tube is compressed and shortented by .2 on the single 20% reduced measuring device.
** 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. **
42cm
8
10, 10.25
10, 10.25
10, 10.25
10, 10.25
10, 10.25
As the pressure in the tube increases so that the water in the vertical tube can be elevated to the second mark at 42cm; the air column in the pressure tube is compressed and shortented by .25 on the single 20% reduced measuring device.
** 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. **
92cm
8
10, 10.5
10, 10.5
10, 10.5
10, 10.5
10, 10.5
As the pressure in the tube increases so that the water in the vertical tube can be elevated to the mark at 92cm; the air column in the pressure tube is compressed and shortented by .25 on the single 20% reduced measuring device.
** **
62cm
8
10, 10.3
10, 10.3
10, 10.3
10, 10.3
10, 10.3
This one is a little hard to read but it would appear to be somewhere between the highest and the first pressure mark. The eyes just aren't as sharp as they used to be. As the pressure in the tube increases so that the water in the vertical tube can be elevated to the mark at 92cm; the air column in the pressure tube is compressed and shortented by .25 on the single 20% reduced measuring device.
Very good.