#$&*
PHY122
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.
** Measuring Atmospheric Pressure_labelMessages **
3/26/13
** Measuring Atmospheric Pressure_labelMessages **
After squeezing the bottle, the water level in the vertical tube increases and the length of the air column in the pressure indicating tube decreases.
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I chose the second reduction as it seemed to give the best balance of small increments without being so small as to not be able to accurately see the changes from my vantage point.
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77.5
This is the length of the air column measured using multiple second reduction rulers taped together. One ruler mark was placed at the end of the tube to represent “0” and the column was measured from that point. When doing the setup for this lab, I wasn’t sure which extension tube to use. I had a single very long tube that I attached to one of the smaller ones coming out of the bottle for the pressure indicating tube.
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10
77.5
77.5, 66.2
77.45, 66.45
77.5, 66.35
77.5, 66.5
77.45, 66.2
Lines 1 and 2 are the height of the water in the vertical tube and the length of the column respectively. The remaining lines are the lengths of the air column before and after squeezing the bottle.
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20
77.45
77.45, 61.75
77.5, 62
77.4, 61.8
77.45, 61.9
77.5, 61.95
Lines 1 and 2 are the height of the water in the vertical tube and the length of the column respectively. The remaining lines are the lengths of the air column before and after squeezing the bottle.
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30.0
77.4
77.4,57.65
77.45,57.6
77.4,57.55
77.4,57.6
77.45,57.65
Lines 1 and 2 are the height of the water in the vertical tube and the length of the column respectively. The remaining lines are the lengths of the air column before and after squeezing the bottle.
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1hour
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Good data. This will serve you well when you get to Part 2 of this experiment.
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