course organization and first experimentmostafa/courses/phys3719/latest/docs/lecture1.pdfcourse...

Course Organization and First ExperimentPHYS 3719 - Class #1

Miguel Mostafá

Physics DepartmentUniversity of Utah

24th August 2006

Today’s program

Course OrganizationGeneral InformationClasses and GradingExperiments and BooksContacts and Extra Info

Experiment #1Introduction

Outline



General InformationLectures

T,H 5:00-6:00pm JFB B-1

Laboratory

Section Day Time Location1 F 8:00am-12:00pm 306/307 SP2 F 1:00pm- 5:00pm 306/307 SP3 S 9:00am- 1:00pm 306/307 SP

Instructors

Miguel Mostafá John [email protected] [email protected] 581-5232224 INSCC 307C SP

M 10:00-11:30amW 1:30-3:00pm 306 SP

General Information (cont.)

Laboratory Assistant

I David Thomas 217 MINES 585-9861 [email protected]

Important Dates

I Wednesday, August 23rd : Classes begin.I Friday, September 1st : Last day to drop (delete) class.I Friday, October 20th : Last day to withdraw from class.I Thursday, December 7th : Classes end.I Monday, December 11th through Friday, December 15th :

Final examination period.

General Information (cont.)

Goals

1. A selection of seminal physics experiments

2. Laboratory apparatus and measurement techniques

3. Recording habits and procedures

4. Data and error analysis procedures

5. Experiment planning

6. Formal reporting of experimental procedure, results, andanalysis

Outline



Course OrganizationLectures

General contents

I Theory, experimental technique, data analysis, erroranalysis, and interpretation of results

I Discussion of particular experiments and problemsI Scheduling of experimentsI Homework, problems, and testsI Collection of completed experiments and assignments

Course Organization (cont.)Lectures (cont.)

Particular Topics

1. Laboratory notebook contents2. Data and error analysis

2.1 Data transformation2.2 Random and systematic errors2.3 Probability distributions and the analysis of random errors2.4 Propagation of errors2.5 Least-squares fitting

3. Experiment design

4. Experiment evaluation

5. Writing a scientific paper

Course Organization (cont.)Laboratory

ExperimentsCompletion of five experiments and a laboratory practicalexamination (LPE).

Experiment Group Length of Time % of Grade1 1 2 weeks 82 1 3 weeks 83 2 2 weeks 84 2 2 weeks 85 2 or 3 3 weeks 12

LPE 8 hours 12

Note: Experiment 1 and the LPE are performed by eachstudent individually. The other experiments are carried out ingroups of two students.

Course Organization (cont.)Laboratory (cont.)

Laboratory work

1. Preliminary measurements

2. Analyze preliminary measurements

3. Modify experimental method as necessary

4. Careful measurements

5. Analyze careful measurements

Course Organization (cont.)Laboratory (cont.)

Laboratory Notebook

I Prereport1. Title2. Purpose3. Introduction4. Theory5. Plan of Analysis6. Numerical Estimates7. References

I Postreport1. Experimental method2. Data (into your notebook while performing the experiment

AND initialed before leaving)3. Results4. Discussion5. Conclusion

Course Organization (cont.)

Grading

1. Experiments 1 to 5 44% (4× 8% + 12%)2. Laboratory skills 16%3. Problems 1 to 6 and tests 1 and 2 20% (6× 2% + 2× 4%)4. Scientific paper 8%5. Laboratory practical examination 12%

Outline



ExperimentsGroup 1

1. Compound Pendulum

2. Geiger-Mueller Detector and Counting Statistics

Group 2

1. Gravitational Constant G

2. Speed of Light c

3. Electron Charge-to-Mass Ratio e/m(orbital motion of electrons in a magnetic field)

4. Thermal Radiation

5. Millikan Oil Drop Experiment

6. Planck’s Constant h

7. Franck-Hertz

8. Balmer Spectrum

Experiments (cont.)

Group 2 (cont.)

9. Thermionic Emission of Electrons

10. Gamma Ray Spectroscopy

Group 3

1. Muon Lifetime

2. Nuclear Magnetic Resonance (continuous wave)

3. Nuclear Magnetic Resonance (pulsed)

4. Compton Scattering

5. Low Temperature Specific Heats and Calorimetry

6. Electrical Conductivity and the Hall Effect

7. Avogadro’s Number From Brownian Motion

8. High Resolution Optical Spectroscopy

Experiments (cont.)

Group 3 (cont.)

9. Zeeman Effect

10. Fourier Transform Spectroscopy

11. Alpha Particle Spectroscopy

12. High Temperature Superconductivity

13. Noise

14. Faraday Rotation

15. Chaos

16. Photoluminescence and Optical Absorption in GaInP

17. Electron Charge-to-Mass Ratio e/m (magnetron method)

18. Gaussian Beams and Fiber Optics

Texts

Required

I David C. Baird, “Experimentation: An Introduction toMeasurement Theory and Experiment Design,” 3rd ed.,Prentice Hall, 1995.

I John R. Taylor, “An Introduction to Error Analysis,” 2nd ed.,University Science Books, 1997.

Optional

I Adrian C. Melissinos and Jim Napolitano, “Experiments inModern Physics,” 2nd ed., Academic Press. 2003.

I Daryl W. Preston and Eric R. Dietz, “The Art ofExperimental Physics,” Wiley, 1991.

Outline



Sources of Info

Contact info

Miguel Mostafá John [email protected] [email protected] 581-5232224 INSCC 307C SP

M 10:00-11:30amW 1:30-3:00pm 306 SP

Other sources

I WebCTI Main web page http://www.physics.utah.edu/∼mostafa/courses/PHYS3719/Fall2006

I Wiki pageI Web log

Outline



Experiment 1

A Physical Pendulum and the Acceleration due to Gravity

1. Determine g from the T of a triangular card pendulum

2. From the period of oscillation

T(x

h

)= 2π

√hg

f(x

h

),

where f( x

h

)= 1

18( 23−

xh )

+(2

3 −xh

)for x

h < 23

Experiment 1 (cont.)


3. For an equilateral triangle of given height h measure t20 fordifferent x values.

4. Make a table of the measured and calculated values

5. Plot T 2 as a function of f

6. Determine the slope a from T 2 = a · f7. Determine g using h ± δh and a± δa

Experiment 1 (cont.)


8. (Optional) Determine a (and g) using a weighted fit

9. Compare the measured value(s) with the accepted ones

10. Analyze sources of errors

11. Discuss the results and experimental technique

12. Finish and present the report

13. Happy students are ready for the next experiment!

Summary and Reminders

I Never hesitate to contact usI Always provide feedbackI On Friday September 1st we start with E1I No lab tomorrow

I OutlookI Discuss E1I Laboratory Notebook

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