PHY 232
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'? **
When I squeeze the bottle(it is a 2 liter coca cola bottle by the way) the water goes through the tube and the water through the tube travels through the tube until it displaces. The water does not flow altogether. It goes in little increments. What I mean is water flows in the tube and then there is a gap(I'm assuming air pushing through) followed by more water. Like in the previous experiments, I feel that I have to squeeze harder to continue the water to flow.
** Length of the air column in units of your measuring device: **
I am using the second page of ruler copies given to me from the stapled pack. It is almost identical to a regular centimeter ruler that gives units of millimeters. I do not see the need to go more precise than that. My measurements will be in millimeters and that should be accurate enough.
** 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. **
24cm
This is the length of the air column(from above the water level in the soda bottle to the top of the tube when it moves horizontally)
** 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. **
10cm
24cm
0cm(I started with position 0), 0.4cm(that is the length before the first water mark)
0.8cm
.12cm
.16cm
.20cm
.24cm
This is the next distance after the water mark
** 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. **
10cm
24cm
0cm(I started with position 0), 0.4cm(that is the length before the first water mark)
0.24cm
0.28cm
0.32cm
0.36cm
This is the next distance after the water mark
** 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. **
10cm
24cm
0cm(I started with position 0), 0.4cm(that is the length before the first water mark)
0.4cm
0.44cm
0.48cm
0.52cm
This is the next distance after the water mark
** **
** **
60 minutes
I think you have good data here.