Modern Phys Lab Planck's Constant

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Indigo5684
2025-09-30 13:19:33 -05:00
parent 3a98cfaaf5
commit eb52508650
7 changed files with 330 additions and 0 deletions

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V (Volts) I (mAmps)
0.0885278062 0.02217680919
0.08791088769 0.04435361837
0.1566973016 0.04435361837
0.2347374931 0.05544202296
0.3106184698 0.04435361837
0.3908178761 0.05544202296
0.4642311788 0.06653042756
0.5435052074 0.06653042756
0.6215453989 0.06653042756
0.6995855904 0.06653042756
0.7770088634 0.07761883215
0.8547405957 0.07761883215
0.9321638687 0.07761883215
1.024701645 0.07761883215
1.103975674 0.08870723674
1.178622813 0.09979564134
1.256663005 0.08870723674
1.330693226 0.09979564134
1.408424959 0.09979564134
1.484305935 0.09979564134
1.562963045 0.1108840459
1.641003237 0.1108840459
1.718118051 0.1219724505
1.79307365 0.1219724505
1.872039219 0.1219724505
1.951313247 0.1219724505
2.026577306 0.1330608551
2.104925956 0.1219724505
2.184199985 0.1219724505
2.26069788 0.1330608551
2.33935499 0.1552376643
2.425723582 0.1995912827
2.480937788 0.3215637332
2.520420573 0.5544202296
2.548181906 0.8205419399
2.570699431 1.119928864
2.586122394 1.419315788
2.603396113 1.729791116
2.620669831 2.062443254
2.632699742 2.384006987
2.644729653 2.72774753
2.657376482 3.049311263
2.669406393 3.381963401
2.680819386 3.725703943
2.691923919 4.08053289
2.701177696 4.424273433
2.712590689 4.768013975
2.723695222 5.122842922
2.736342051 5.566379106
2.744053533 5.887942839
2.75361577 6.25386019

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V (Volts) I (mAmps)
0.0885278062 0.05544202296
0.08791088769 0.03326521378
0.1563888423 0.04435361837
0.2350459523 0.04435361837
0.3112353883 0.04435361837
0.3917432539 0.04435361837
0.4654650159 0.06653042756
0.5438136666 0.05544202296
0.6233961544 0.06653042756
0.6992771312 0.06653042756
0.7782427005 0.07761883215
0.8544321365 0.07761883215
0.934940002 0.08870723674
1.025627023 0.08870723674
1.103975674 0.08870723674
1.179239732 0.09979564134
1.256663005 0.08870723674
1.331001685 0.09979564134
1.408116499 0.09979564134
1.486156691 0.09979564134
1.563579964 0.1108840459
1.641620155 0.1108840459
1.717809591 0.1108840459
1.793999027 0.1330608551
1.8714223 0.1330608551
1.951313247 0.1330608551
2.025651928 0.1441492597
2.100915986 0.1774144735
2.163224756 0.2772101148
2.207334429 0.4435361837
2.240956488 0.6763926802
2.272727791 0.9979564134
2.298329909 1.286254933
2.318996679 1.574553452
2.338429612 1.873940376
2.357554086 2.184415705
2.374210886 2.483802629
2.392409982 2.794277957
2.409066782 3.115841691
2.422022071 3.437405424
2.438061952 3.770057562
2.453484915 4.08053289
2.468599418 4.391008219
2.481554707 4.723660357
2.49666921 5.056312494
2.512400632 5.400053037
2.524430543 5.699439961
2.537694291 6.032092099
2.554351091 6.442363068
2.569465594 6.786103611
2.579336291 7.129844153

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V (Volts) I (mAmps)
0.08791088769 0.04435361837
0.0885278062 0.03326521378
0.1557719238 0.03326521378
0.2338121153 0.04435361837
0.3133946031 0.05544202296
0.3902009576 0.04435361837
0.4660819344 0.06653042756
0.5438136666 0.06653042756
0.6218538582 0.06653042756
0.6989686719 0.06653042756
0.7773173227 0.08870723674
0.8547405957 0.07761883215
0.933706165 0.08870723674
1.02686086 0.06653042756
1.104284133 0.08870723674
1.180473569 0.09979564134
1.256663005 0.1108840459
1.331618604 0.09979564134
1.407191121 0.09979564134
1.485231313 0.1108840459
1.562037668 0.1219724505
1.641003237 0.1219724505
1.710715028 0.1552376643
1.769630746 0.2550333056
1.811889664 0.4546245883
1.836257945 0.7318347031
1.85507396 1.053398436
1.867720789 1.386050574
1.876049189 1.718702712
1.884686048 2.084620063
1.890546774 2.450537415
1.897949796 2.916250408
1.903810522 3.271079355
1.906895115 3.648085111
1.911213544 4.025090867
1.91707427 4.413185028
1.919233485 4.790190784
1.923243455 5.178284945
1.926636507 5.566379106
1.927253425 5.932296457
1.930029559 6.320390618
1.933422611 6.697396374
1.935581825 7.085490535
1.938357959 7.473584696
1.940517173 7.883855666
1.944218685 8.249773017
1.94606944 8.648955582
1.947920196 9.037049743
1.951313247 9.513851141
1.951930166 9.901945301
1.953472462 10.30112787

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V (Volts) I (mAmps)
0.08791088769 0.03326521378
0.08760242843 0.03326521378
0.1551550053 0.04435361837
0.2341205746 0.06653042756
0.3115438476 0.05544202296
0.3905094169 0.06653042756
0.4651565566 0.05544202296
0.5441221259 0.05544202296
0.6227792359 0.06653042756
0.6986602127 0.06653042756
0.7782427005 0.07761883215
0.8522729217 0.07761883215
0.9343230835 0.07761883215
1.027477779 0.07761883215
1.106443348 0.07761883215
1.178931273 0.08870723674
1.256663005 0.08870723674
1.330384767 0.08870723674
1.408116499 0.09979564134
1.485848232 0.09979564134
1.562037668 0.1108840459
1.641928615 0.1108840459
1.717809591 0.1219724505
1.79276519 0.1108840459
1.871113841 0.1219724505
1.95007941 0.1219724505
2.026885765 0.1330608551
2.104309038 0.1330608551
2.183891526 0.1330608551
2.260080962 0.1330608551
2.338429612 0.1441492597
2.433743522 0.1441492597
2.515793684 0.1552376643
2.592291579 0.1663260689
2.67064023 0.1774144735
2.747446585 0.1774144735
2.824561398 0.2106796873
2.887795546 0.2772101148
2.932213678 0.4657129929
2.961208848 0.7318347031
2.981567159 1.020133223
2.999457796 1.35278536
3.013030003 1.674349094
3.023209159 2.007001231
3.037089825 2.339653369
3.04757744 2.694482316
3.058373514 3.038222858
3.065468077 3.393051805
3.075955691 3.836587989
3.085517928 4.169240127
3.09292095 4.546245883

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V (Volts) I (mAmps)
0.0885278062 0.03326521378
0.0885278062 0.04435361837
0.1557719238 0.05544202296
0.2350459523 0.05544202296
0.3124692254 0.05544202296
0.3898924984 0.05544202296
0.4651565566 0.06653042756
0.5447390444 0.06653042756
0.6215453989 0.07761883215
0.6986602127 0.06653042756
0.777625782 0.08870723674
0.8531982994 0.07761883215
0.9343230835 0.08870723674
1.025627023 0.08870723674
1.105826429 0.07761883215
1.179548191 0.09979564134
1.257588383 0.09979564134
1.331001685 0.08870723674
1.408424959 0.09979564134
1.486156691 0.1108840459
1.561729208 0.09979564134
1.637301726 0.1330608551
1.701152792 0.2217680919
1.740944035 0.4213593745
1.764695398 0.6985694894
1.781969116 1.009044818
1.795232864 1.341696956
1.809113531 1.674349094
1.81775039 2.02917804
1.824536494 2.384006987
1.831322597 2.749924339
1.840576375 3.182372118
1.847362478 3.559377874
1.853531664 3.925295226
1.860009308 4.280124173
1.868029249 4.657129929
1.872347678 5.034135685
1.876049189 5.422229846
1.881292996 5.765970388
1.885302967 6.142976144
1.889621396 6.519981901
1.894248285 6.896987657
1.898258256 7.262905008
1.902576685 7.662087574
1.907512033 8.028004925
1.911522003 8.416099086
1.917382729 8.793104842
1.918925026 9.181199003
1.923551914 9.6580004
1.926944966 10.01282935
1.931571855 10.40092351

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import numpy as np
from numpy.polynomial import polynomial
import matplotlib.pyplot as plt
import scipy
colors = ['blue', 'green', 'orange', 'purple', 'red']
wavelengths = {
'blue': 465,
'green': 520,
'orange': 589,
'purple': 390,
'red': 622
}
u_0 = np.empty((len(colors)))
wavelength_inv = np.empty((len(colors)))
fig, axs = plt.subplots(len(colors), sharex='all', sharey='all')
fig.tight_layout()
for color_index, color in enumerate(colors):
with open(f'{color}.dat', 'r') as file:
lines = file.readlines()
lines.pop(0)
voltage = np.empty((len(lines)))
current = np.empty((len(lines)))
for index, line in enumerate(lines):
parts = line.split('\t')
voltage[index] = float(parts[0])
current[index] = float(parts[1])
## Line 1
line_1_bound = len(lines) // 3
line_2_bound = len(lines) - 12
line_1 = polynomial.Polynomial.fit(voltage[1:line_1_bound], current[1:line_1_bound], 1)
line_2 = polynomial.Polynomial.fit(voltage[line_2_bound:], current[line_2_bound:], 1)
line_1 = line_1.convert(domain=(voltage[0], voltage[-1]))
line_2 = line_2.convert(domain=line_1.domain)
intersect_x = scipy.optimize.fsolve(line_1 - line_2, 0)
intersect_y = line_1(intersect_x)
ax = axs[color_index]
ax.scatter(voltage, current, label="Raw Data", color=color)
ax.set_ylim(ax.get_ylim())
space = np.linspace(voltage[0], voltage[-1])
ax.plot(space, line_1(space), color='red', label='Trendline 1')
ax.plot(space, line_2(space), color='orange', label='Trendline 2')
ax.scatter(intersect_x, intersect_y, color='pink', label=f'Intersect: {intersect_x[0]:0.3f}V')
ax.legend()
ax.set_title(f"Voltage v Current ({color})")
ax.set_xlabel("Voltage (V)")
ax.set_ylabel("Current (mA)")
u_0[color_index] = intersect_y[0]
wavelength_inv[color_index] = 1 / wavelengths[color]
plt.show()
line = polynomial.Polynomial.fit(u_0, wavelength_inv, 1)
space = np.linspace(min(u_0), max(u_0))
plt.plot(space, line(space), color='orange', label='Trendline 2')
plt.scatter(u_0, wavelength_inv)
plt.xlabel("U_0")
plt.ylabel("1/Wavelength")
plt.show()