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INTRODUCTION TO GENERAL PHYSICS LAB

This semester has two lab courses, "Elementary Physics Lab" and "Design &Build Physics Lab (DBL)".


I-1. The Objective of The Elementary Physics Laboratory

The experiments that you will study in the laboratory have been selected to illustrate certain basic principles and methods of physics. In particular these experiments have certain objectives which include:

1. to acquaint you with some of the techniques and basic apparatus used in experimental work,

2. to demonstrate certain physical concepts and principles in the laboratory,

3. to introduce you to the methods of data analysis, and

4. to give you a feeling for the relative worth of your experimental results, and to introduce you to the  methods of error analysis.



I-2. The Objective of Design & Build Physics Laboratory (DBL)

This course emphasizes understanding the basics of physics, particularly electromagnetism and their practical applications through laboratory investigations performed on apparatus constructed with your own design and build. There are four main proposes for this hands-on activity.

1. Abstract physical concepts will become more real through this DBL course and the scientific knowledge you learned from this course will be useful for creative research or engineering.

2. You will meet and become familiar with the essential laboratory equipments.

3. You will have an experience in solving real-world experimental problems, which are multifaceted and open-ended unlike textbook problems.

4. You should manage this DBL course yourself.


II. Lab Grades

The present grading systems say in effect that the student's lab grade will be at a minimum so long as an honest effort is made in the lab. The grades will be as follows:

A. clearly outstanding ; worth 9 pts

B. good ; worth 7 pts

C. average ; worth 5 pts

D. very poor ; worth 2 pts

F. absent from lab ; worth 0 pts

The expectation is that no student coming to lab and making an honest effort shall receive a grade less than C. At the end of the semester all grades for two lab courses, elementary physics lab and DBL will be added. The final grade consists of two parts, elementary physics lab (30%) and DBL (70%).

1. Grading for elementary physics lab

- Pre-lab test (10%)

- Lab report (80%)

- Attendance (10%)

- Attitude (penalty count)

2. Grading for DBL

- Research Proposal (20%)

- Lab Performance (25%)

- Presentation of Final Result (20%) - poster

- Final Report (25%)

- Attendance (10%)

- Attitude (penalty count)



III. General comments to the students
Because there are a large number of students enrolled in the physics laboratory, a certain amount of regimentation is necessary in order to run the laboratory class smoothly.

You will be expected to attend the laboratory at your officially scheduled time. Make-up labs are not permitted except in unusual circumstances; so be careful not to oversleep or "forget!" If you have a legitimate reason for not attending at the scheduled time, you should arrange for a make-up as follows.



A. Pre-Lab Test
The pre-lab test is due at the beginning of the lab. The propose of this is designed to test your knowledge and understanding of the key subject of the lab you are about to perform. In addition, you might be asked to sketch a graph of the expected results, or you might be asked to do a straight forward calculation using one of the key equations in the current experimental write-up. This must be submitted before the start of the lab. The test will continue about 15 minutes and is worth 10 points.



B. Laboratory Reports
The writing of the lab reports always consumes a significant part of the time spent in the laboratory. Since the student's laboratory course grade is primarily determined by the grades of laboratory reports students should pay careful attention to the following suggestions. You should, however, be aware of the fact that even if you do all that is required in the lab write-ups and present a clear report of that work you will not necessarily receive the grade of perfect "A". Only those students whose write-ups demonstrate that they have a clear understanding of the experiment will receive above average report grades. An average report grade implies that you did what was expected from you, and your work was comparable to that of most of your classmates.

Your finished report should include the following things:

1. Title page including the following information

- Title of experiment

- Date of Lab Class

- Report Submission Date

- Your name &Student ID No.

- Your lab partners' name

- Your instructor's name

2. lab report including the answers to question on each experiment

- Work sheet

- Data sheets

- Calculation results with appropriate units

- Analysis results (tabular and/or graphical in nature)

- Conclusions including error analysis

※ This lab report must be submitted to the instructor until the day after tomorrow from the lab session. This lab report is worth 70 points. A late lab report will merit a minimum loss of 20% a day and no point will be awarded in a case more than a week late. Please submit the lab report to your instructor after cutting the data sheets and work sheets along a dotted line.

The data should be recorded in a neat, clear tabular form. Each table should be clearly labelled. All original data sheets must be turned in as part of the report. Recopying of data sheets is unnecessary and will be frowned upon by your instructor.

All calculations made in getting your results from the data should be clearly shown. If the results are of a nature where the same set of equations is used repeatedly, a single complete sample calculation of one of the results is all that need be included in the report.

The experimental results together with their calculated uncertainties should clearly stand out in your report (e.g, g = 980.1±0.3 cm/sec2 ). If your results are graphed you should use a single sheet of graph paper for each graph. Always be sure to make use of a maximum area of each sheet of graph paper by selecting an appropriate but convenient scale, i.e, 1, 2, 5, 10, etc

The conclusions you draw from your experiment should be written in paragraphs containing the following:

1. What was verified in the experiment.

2. How well was it verified, i.e, what discrepancies are apparent.

3. A discussion of the probable sources of error together with suggestions for improvement of techniques. This discussion often tells the reader of your report how well you understood the experiment.

4. Statements concerning the meaning of any graphs should be made in the part of the write-up

The content of the lab report need not include anything clearly given in the write-up sheets. Such items as a list of apparatus and procedure should not be presented in the lab report. Procedures differing form those given in the instructions must however be carefully explained. A good rule of thumb is to be sure that your report along with the original instruction sheet should, when taken together, i.e. another person enough information to redo the experiment in the same way as it was done by you. (i.e., things such as the meter scales used should be recorded with your data, etc.)

※ Warning

1. Individual lab report should be unique, not a copy of partner's work.

2. Only data can share with your lab partners.

3. Don't submit work that is not your own.

4. It you submit work that is not your own, you will not receive a grade.

5. Honesty in science is a fundamental requirement.




Ⅶ. Another suggestions

1. Please note that food, candy, and beverages are not allowed in the lab.

2. Please clean your area when you leave the lab.



Ⅷ. Lab information

1. Location: Science Bldg. Ⅳ, Room 102

2. Recommended books

 - "University Physics with modern physics" by Young and Freedman


- " An Introduction to Error Analysis " by John R. Taylor

3. Web page: http://edulab.postech.ac.kr/