PASCO Xplorer-GLX Users’ Guide - Manual (Page 145)

X p l o r e r G L X U s e r s ’ G u i d e 139
12. While viewing the Output Screen, press and to turn off both out-
put channels.
Analysis
1. For each line of the chart, calculate and record the frequency difference
(
∆ f = f
left
− f
right
) and beat period, T
beat
. (You can do these calculations in
your head.)
2. Press to return to the Home Screen; press to open the Calculator.
Use the calculator to calculate the beat frequency, f
beat
, for each line of the
chart.
3. According to your data, what is the relationship between
∆ f and f
beat
?
F1 F2
Left Channel
Frequency
f
left
Right Channel
Frequency
f
right
Frequency
Difference
∆ f
Elapsed Time for
10 Beat Cycles
Beat Period
T
beat
Beat Frequency
f
beat
F3
f
beat
1 T
beat
⁄
=