Phy 231
Your 'timer program' 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 General Comment **
** Describe what you see on your first 10 clicks **
The easiest way to describe what I see is to just copy and paste the data so here it is:
1 82.6875 82.6875
2 83.64063 .953125
3 84.3125 .671875
4 84.82813 .515625
5 85.20313 .375
6 85.67188 .46875
7 86.07813 .40625
8 86.53125 .453125
9 87.03125 .5
10 87.4375 .40625
11 87.98438 .546875
** Your TIMER data from 20 fast clicks **
1 10.64063 10.64063
2 10.76563 .125
3 10.90625 .140625
4 11.0625 .15625
5 11.20313 .140625
6 11.35938 .15625
7 11.5 .140625
8 11.65625 .15625
9 11.79688 .140625
10 11.96875 .171875
11 12.125 .15625
12 12.28125 .15625
13 12.45313 .171875
14 12.57813 .125
15 12.75 .171875
16 12.89063 .140625
17 13.04688 .15625
18 13.21875 .171875
19 13.375 .15625
20 13.51563 .140625
** Your average time interval for 20 time intervals **
0.151315789
I got this by copying the data in excel and using the average function to compute this number
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
0.125,2
0.140625,6
0.15625,7
0.171875,4
** Your general comment to this point **
OK
** Why did you observe only certain time intervals? **
The timer probably reported that so frequently because it probably records its values at certain intervals and the click happened closest to that interval.
The timer program is not flawed or useless, but that was the best it could record when trying to record a millionth of a second
** What did you see when you looked at the differences between time successive time intervals? **
It seems like the finger was clicking faster than the one before it and then on some of them the finger was a little bit slower. This tells us that the timer program is very quick to respond to the touch.
** Your time intervals for 7 complete breaths: **
4.453125
4.4375
3.796875
3.4375
3.625
3.625
3.484375
4.21875
3.71875
** Your general comment to this point: **
I think that my breaths were not as deep because they are way off of yours
** Why did you rarely, if ever, observe that same time interval twice? **
Becuase our clicking was much more spread out and our breaths were not the same as the one before. The timer had time to catch up with the click. When you are doing a rapid click it is almost very fast for the timer to keep up so it just picks a few numbers that are close
** Do you think this program is accurate to .1 or .01 ... **
Letter D, the TIMER program is capable of determining the time between two events to within about .0001 seconds
** Copy of a few lines of your spreadsheet from the TIMER program. **
Breath timer
event number clock time time interval
1 2089.641 2089.641
2 2094.094 4.453125
3 2098.531 4.4375
4 2102.328 3.796875
5 2105.766 3.4375
** **
40 minutes
** **
&#Your work looks good. Let me know if you have any questions. &#