physics 490 ppp
TRANSCRIPT
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Presented by:
Raymond Rogers and Michael Shaffer
Advised by: Dr. J. Hoffman
Special Thanks to: Duane MillerDr. R. Larivee
Dr. F. SeneseDr. Mumper
Dr. Soysal
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To Write a Brief Biography of Thomas Alva
Edison
To Measure Electrical Characteristics of ModernIncandescent Light Bulbs
To Determine and Measure all Important
Physical Characteristics of Light Bulbs
To Attempt to Recreate the Original Carbon
Filament Edison Light Bulb
http://antoine.frostburg.edu/phys/edison/
Project Goals
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Thomas Alva Edison(1847-1931)
ChildhoodMenlo Park
Patents and Inventions
The Golden Years
http://antoine.frostburg.edu/phys/edison/
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Childhood Years
Samuel & Nancy
Edison
Home Life
Education
Employment
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Menlo Park The Invention Factory and the Muckers
The Birth Place of the Practical Light Bulb
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Patents and Inventions In His Life, Edison Completed 1093 Patents
Still Holds World Record for Most Patents
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The Golden Years Edison, the Workaholic
Died - October 18, 1931 at the age of 84
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Analysis of Modern Light Bulbs
Specifications of Apparatus
ProcedureQuantitative Analysis of Data
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Specifications of
Apparatus/Supplies Variac power supply
Multi-meters Light Bulb platform
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Light Bulbs Various Accessories
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ProceduresResearch / Inquiries
Experiment Development
Execution of Experiment
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Example
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Quantitative Data Analysis
Findings
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Current Vs. Voltage 1
Current Vs. Voltage 2
Current Vs. Voltage 3
Resistance Vs. Power Characteristics of Manufactured Edison Bulb
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Further Interest Curiosity in Tungsten Filaments Up Close and Personal
http://antoine.frostburg.edu/phys/edison/
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The Edison BulbResearch and Development
CarbonExperiments
Conclusions
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Research and Development
Personnel Consultation
ReferenceInsight of Curiositythe Pickle
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Experiments
The Creation and Testing of 78
Carbonized Filaments
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Explosions in the Lab
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Results
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Carbon
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ConclusionWhat Knowledge Have We
Acquired by this Project?
The Future of Lighting
Where do we go from here?
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ReferencesLiterary
Beasley, Rex. Edison. Philadelphia: Chilton Company, 1964.
Miller, Francis T. Thomas . Edison. Philadelphia: John C.
Winston Company, 1931.
Josephson, Matthew. Edison. USA: London Eyre &
Spottiswoode Publishers, 1959.
Beaty, Wayne H., and Donald G. Fink. Standard Handbook for
Electrical Engineers, 13th ed. USA: McGraw-Hill, 1993.
Elenbaas, W. Light sources New York, Crane, Russak [c1972]
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Internethttp://www.leyada.jlm.k12.il/proj/edsntsla/hist1.htm
http://www.minot.com/~mps/edison/edison/edison.html
http://www.cesa10.k12.wi.us/Investigate-
America/discoveries/meganc/edison.html
http://www.users.fast.net/~blc/xlhome4.htm
http://www.ushistory.net/toc/electricity.htmlhttp://www.edisonian.com/p006bulbs.htm
http://www2.lucidcafe.com/lucidcafe/library/96feb/edison.html
http://www.sci-ed-ga.org/modules/materialscience/light/
http://tlc.ai.org/edison.htm
http://www.misty.com/people/don/bulb1.html
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OtherDr. Hoffman
Dr. Larviee
Dr. Mumper
Donald L. Klipstein
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Purpose:
The purpose of the experiment was to determine the resistance of unused light bulbs
Materials:
1 Light bulb socket2 Digital Multimeter4 40 Watt standard light bulbs(frosted)4 60 Watt standard light bulbs(frosted)
4 75 Watt standard light bulbs(frosted)4 100 Watt standard light bulbs(frosted)2 60 Watt standard light bulbs (clear)2 100 Watt standard light bulbs (clear)
2 150 Watt standard light bulbs (clear)Methods:
1. Find the resistance of both multimeters by crossing probes. Record.2. Find the resistance on both sides of light bulb socket by running a probe between
the side of the bulb and the terminal, and then repeat with the other terminal andthe bottom of the socket. Record.
3. Number all light bulbs 1 through 4 with a magic marker in each different wattage(or 1 and 2 for the clear bulbs)
4. Test the resistance of 40 watt bulb number 1 by holding a multimeter probe to themetal screw part, and the other probe to the metal pin at the base of the bulb.Record this resistance.
5. Repeat procedure of the same light bulb with the second multimeter.6. Repeat steps 4 and 5 and replace 40-watt bulb 1 with 40-watt light bulbs 2,3, and
4.
7. Replace bulb and test all of the 60, 75, 100, and 150-watt bulbs (both frosted andclear) in the same fashion. Record data.8. Screw the 40-watt bulb 1 into the light bulb socket. Record resistance across the
two terminals of the socket.9. Repeat with 40-watt bulbs 2,3, and 4. Record data.10.Test the 60, 75, 100, and 150-watt bulbs (both frosted and clear) in the same
fashion. Record data.11. Calculate the average resistance for different wattage light bulbs. Be sure to take
into account both multimeters and the tare reading of both the multimeter and thelight socket.
12. Plot data.13. Draw conclusions.Data/Plots:
Attached on separate sheets
Summary:
From this experiment, data was gathered about light bulbs. We found that resistance
does indeed depend on wattage. It seemed that as the wattage got higher, resistance
correspondingly got smaller. Also, we noted that the resistance was less varied in
higher wattage light bulbs.
Back
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Current Vs. Voltage for multiple wattages of frosted bulbs
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0 20 40 60 80 100 120 140
Voltage (V)
Current(A) 40W
60W
75W
100W
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Back
Current Vs. Voltage for multiple wattages of a clear bulbs
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0 20 40 60 80 100 120 140
Voltage (V)
Current(A)
60W100W
150W
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Comparing bulbs I vs. V
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0 20 40 60 80 100 120 140
Voltage (V)
Current(A)
Frosted 100W
Clear 100W
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Back
Resistance Vs. Power(w)For Multiple Size Light Bulbs
0
5
10
15
20
25
30
0 20 40 60 80 100 120 140 160
Size Bulb (Power (w))
Resistance
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Back
Voltage Vs. Current Comparison
0
20
40
60
80
100
120
140
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35
Power
Voltage
Edison
40 Watt
Poly. (Edison)Poly. (40 Watt)
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