Experiment 1
blue 100% intensity 80% 60% 40%
stopping Potential (volts) 2.001 2.003 1.999 1.986
Refresh Time (sec) 17.16 20.56 23.21 26.21
yellow 100% intensity 80% 60% 40%
stopping Potential (volts) 0.7087 0.709 0.709 0.7091
Refresh Time (sec) 14.78 18.45 23.32 26.45
green 100% intensity 80% 60% 40%
stopping Potential (volts) 0.843 0.8384 0.839 0.8394
Refresh Time (sec) 14.9 17.32 22.41 25.89
purple 100% intensity 80% 60% 40%
stopping Potential (volts) 1.46 1.459 1.46 1.457
Refresh Time (sec) 15.62 17.98 20.12 24.91
experiment 2
color ultraviolet trial 1 trial 2 trial 3 trial 4
stopping potential (1st maxima) 2.024 2.022 2.025 2.019
stopping potential (2nd maxima) 2.025 2.024 2.02 2.018
(volts)
color violet trial 1 trial 2 trial 3 trial 4
stopping potential (1st maxima) 1.667 1.675 1.679 1.674
stopping potential (2nd maxima) 1.687 1.688 1.682 1.682
color blue trial 1 trial 2 trial 3 trial 4
stopping potential (1st maxima) 1.467 1.47 1.468 1.468
stopping potential (2nd maxima) 1.478 1.475 1.473 1.471
color green trial 1 trial 2 trial 3 trial 4
stopping potential (1st maxima) 0.8408 0.8406 0.8393 0.8381
stopping potential (2nd maxima) 0.8301 0.8218 0.824 0.8235
1.207
color yellow trial 1 trial 2 trial 3 trial 4
stopping potential (1st maxima) 0.7089 0.7106 0.7102 0.7072
stopping potential (2nd maxima) 0.7131 0.7141 0.7142 0.7108
1st max pot 2nd max freq
had to place data into adjacent cells
so linest function would work
properly 2.025 2.02175 8.20264E+14
1.67375 1.68475 7.40858E+14
1.46825 1.47425 6.87858E+14
0.8397 0.82485 5.48996E+14
0.709225 0.71305 5.18672E+14
20% blue refresh time as intensity yellow refre
1.991
32.43
decreased
40 50
20% 20 blue refresh time as
0.7092 intensity decreased 0
0
30.78 0 1 2 3 4 5 6 0
20%
0.8402 50 green refresh time as intensity violet refres
30.02 decreased
20% 50
1.456 green refresh time as
28.58 intensity decreased 0
0 0
0 1 2 3 4 5 6
average stopping potential (volts) frequency (hz)
2.0225 8.20264E+14
2.02175 8.20264E+14 1st maxima stopp
2.5
2
1.67375 7.40858E+14
1.68475 7.40858E+14
1.5
1
1.46825 6.87858E+14 0.5
1.47425 6.87858E+14
0
5.00000E+14 7.00000E+14
0.8397 5.48996E+14
0.82485 5.48996E+14 2nd maxima stopp
2.5
0.709225 5.18672E+14
0.71305 5.18672E+14 2
1.5
1.5
1
0.5
0
5.00000E+14 7.00000E+14
yellow refresh time as intensity
decreased
yellow refresh time as
intensity decreased
2 4 6
violet refresh time as intensity
decreased
violet refresh time as
intensity decreased
2 4 6
linest function for first maxima, slope * e will give h
1st maxima stopping pot. Vs freq slope 4.36809E-15 -1.5543
"+/-" 4.63841E-17 0.031221
0.999661834 0.011847
8868.392618 3
1.244767515 0.000421
1st maxima stopping pot.
Vs freq calculated val for h (j*s)
Linear (1st maxima 6.99768E-34
stopping pot. Vs freq) error 7.43E-36
linest function for second maxima to find h
slope 4.39314E-15 -1.57037
7.00000E+14 9.00000E+14 "+/-" 6.95726E-17 0.046829
0.999248168 0.01777
3987.255497 3
2nd maxima stopping potential vs 1.259087614 0.000947
frequency calculated value for h (j*s)
7.03782E-34
work function (Joules)
-2.48999E-19
2nd maxima stopping
potential vs frequency
or 1.55413 eV
7.00000E+14 9.00000E+14
ima, slope * e will give h
y-int
"+/-"
accepted val for h
6.626068E-34
maxima to find h
y-int
"+/-"
error
1.11E-35
error
5.00E-21