Photoelectric Effect Apparatus
Model No. AP-8209
21
®
Appendix A: Specifications
Appendix B: DataStudio Graphing Instructions
The instructions below outline a method for using DataStudio to plot graphs of Stopping Potential
versus Frequency or Current versus Voltage. For information on the latest version of DataStudio, go
to the PASCO web site (www.pasco.com).
Procedure
PART 1: Open a new DataStudio file.
Start
DataStudio
. When the
Welcome to DataStudio
screen opens,
select ‘
Enter Data
’. An empty Table display with columns for X and Y
data and an empty Graph display with X- and Y- axes will open. Click the
Summary
button in the toolbar to open the
Summary
list.
OR
If the
Welcome to DataStudio
screen does not appear, select
‘
New Empty Data Table
’ from the
Experiment
menu. An empty Table
display and the
Summary
list will open. Double-click the Graph display
icon in the bottom half of the
Summary
list, or select ‘
Add Display
’ from
the
Experiment
menu and select ‘
Graph
’ in the window that opens.
Item
Description
Current Amplifier
Measuring range: 10
-8
to 10
-13
A, in six ranges, 3-1/2 digit display.
Zero drift:
≤
±
0.2% of full range reading in 30 minutes at the range
of 10
-13
A (after 20 minute warm-up).
Voltage Output for
Photoelectric Tube
Voltage adjustment: –2— +2V and –2— +30V (two ranges), 3-1/2
digit display.
Stability:
≤
0.1%
Photoelectric tube
Spectral response range: 300–700 nm
Minimum cathode sensitivity:
≥1µ
A/Lm
Anode: nickel ring
Dark current:
≤
2 x 10
-13
A (–2V
≤
V
AK
≤2
V)
Optical filters
Five filters with central wavelengths of 365.0, 404.7, 435.8, 546.1,
and 578.0 nm
Mercury lamp
Emitting spectral lines of 365.0, 404.7, 435.8, 546.1, and
578.0 nm
Measuring error
For Plank’s constant, within
3%,
typical
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