Physics 174: Physics Lab Introduction
Fall 2009, Prof. Arpita Upadhyaya
What the course is about:
Physics 174 is an introductory Physics Lab that meets for two hours each week in Room 3115 of the Physics Building. In this course you will be expected to master a few basic ideas and tools which you will need for later labs, including: understanding experimental errors, using computer spreadsheets for analyzing, plotting and fitting data, and working with simple electrical circuits and electrical measuring equipment.
Prerequisites: The only prerequisite or co-requisite for the course is Math 140. This course is intended for, but not limited to, students who are interested in majoring in Physics.
Texts: Physics 174 Lab Manual - Fall 2005 edition. Also you'll need a book on data analysis: "A Practical Guide to Data Analysis for Physical Science Students" by Louis Lyons or Intro to Error Analysis by Taylor. Also recommended but not required is "EXCEL 97 at a Glance" by Microsoft.
Web Site: To get the latest information on Physics 174, check the web site at:
http://www.physics.umd.edu/courses/Phys174/index.html
Or, you can get there by logging onto the elms course page: www.elms.umd.edu. You will need to use your U Maryland Directory ID and password to reach the class pages.
Lab sections: I teach three lab sections on the following days:
Section |
Day |
Time |
Teaching Assistant |
0105 |
Wednesday |
12:00-1:50 |
Wrick Sengupta |
0106 |
Thursday |
12:00-2:00 |
Wrick Sengupta |
0108 |
Tuesday |
10:00-12:00 |
Wrick Sengupta |
Contact Information:
Prof. Arpita Upadhyaya
Office:
IPST Bldg, Rm 1115A
Phone: 405-9939
Email: arpitau@umd.edu
Office Hours: You can try stopping by my office at any time but the best way to reach me is to make an appointment by e-mail.
Teaching Assistant for the course:
Wrick Sengupta
Office: PHYS 3109
Phone: 405-6190
Email: wricksg@umd.edu
How the course works:
This course is intended to give you hands-on experience with measurement techniques and basic data analysis. You'll spend time in the lab (room 3115) each week doing an exercise that focuses on a particular concept, following pretty specific instructions in the Lab Manual. You'll answer a series of questions as you work through each exercise. Your professor and TA will be available to help when you need it and to check your work; you'll have a "checksheet" that we will initial as we check each task that you've completed. At the end of the lab period, you will turn in your work, normally in the form of an Excel spreadsheet that you will submit electronically using ELMS (we'll tell you how to do that during the first meeting).
Reading assignments are designed to help prepare you for the lab exercises, so that you can make the best use of your time in the lab. An hour and 50 minutes may seem like a lot of time, but it isn't. Preparing in advance by doing the reading assignment will help you finish on time.
Homework is assigned at the end of most of the labs. Depending on how quickly you've completed the in-class exercise, you may have some time left to do the homework before you leave. You must turn in your homework (usually using ELMS) by 10:00 pm on the second day after your lab session. That is, if you have lab on Wednesday, then the homework is due by 10:00 pm Friday; if you have lab on Thursday, the deadline is 10:00 pm Saturday. We will grade your spreadsheets and homework before your next lab period.
The course includes two in-class practical exams which will involve making measurements and analyzing the data you collect, much like the regular exercises. (In fact, the Lab Manual lists them with exercise numbers.) The instructions and questions for these exams will be handed out at the beginning of the lab period on the scheduled exam dates.
Course web site: Course information, the week-by-week schedule of lab exercises, and other documents are posted in the ELMS (Blackboard) system. You will use the course web site to turn in your Excel spreadsheets from the in-class exercises and homework, and will also be able to use it to view your grade on each assignment. You should be able to log in at http://elms.umd.edu, and the course should appear in the "My Courses" panel.
Note the two exams on Oct 16 and Dec 11!
Week of |
Topic |
Aug 31 |
Exercise 1: Introduction to Excel |
Sept 7 |
Exercise 2: Measurement Error and Uncertainty |
Sept 14 |
Exercise 4: Straight Line Fits Using χ2 and Excel |
Sept 21 |
Exercise 5: Propagation of Errors |
Sept 28 |
Exercise 5*: Using χ2 to Test a Theory |
Oct 5 |
Exercise 6: Review of Spreadsheets and Errors |
Oct 12 |
Exam on Spreadsheets and Errors |
Oct 19 |
Exercise 8: Resistors and Multimeters |
Oct 26 |
Exercise 9: Current and Voltage |
Nov 2 |
Exercise 10: The Digital Oscilloscope and the Function Generator |
Nov 9 |
Exercise 11: The Oscilloscope and AC Signals |
Nov 16 |
Exercise 12: Reflection of Voltage Pulses |
Nov 23 |
No PHYS174 labs, Thanksgiving Break |
Nov 30 |
Exercise 13: Review of Circuits |
Dec 7 |
Exam on Circuits and Error analysis |
Course Policies:
Arriving late to class:
Classes at Maryland begin right on the hour. It is important that you arrive on time to Physics 174 so that you can get instructions for the lab and have time to finish. If you arrive more than 10 minutes late, you may not be allowed into the lab and may have to make it up during another section. This is hard, because the sections are full, so, don't be late!
Lab Makeup Time: Because the other sections are full, it is also very hard to do a make-up, so do not miss your lab section.
Grading:
50% Lab
Spreadsheets
20% Homework: do the
homework!!!
15% Test on spreadsheet, errors and
measurements
15% Test on the oscilloscope and
electrical circuits
Missing one Lab (and not making it up before the next lab) will cost one letter grade in your final grade. Missing one homework set will cost one-half of a letter grade in your final grade. No credit will be given for late homework unless you are seriously ill and provide a written note from your physician.
General
comments on assignments:
Finishing all the labs and homework sets is very important. Missing a lab will generally cost you one letter grade in your final grade, so be sure to come every week. Missing even one homework set will hurt your grade too, so do the best you can. Do the homework early, so that you have time to ask questions if something gives you trouble! Also, if you can't completely finish a homework set, turn in what you do have before the deadline. No credit will be given for late homework unless you have a valid excuse (illness, a religious observance, or some other compelling reason.) When you are working on the homework sets, feel free to discuss among yourselves to try to figure out what is going on. However, do not use these discussions as an excuse to copy someone else's solution to the homework, or let someone else copy your solution. That is cheating and is strictly forbidden. It is also self-defeating since another part of your grade will come from tests. The right way to discuss the homework is to first work through the problem on your own. Try to arrive at a definite answer, even if you aren't sure it is correct. With this preparation you can then discuss intelligently with your colleagues and see if you have missed something essential. Of course, you can always ask one of your instructors.
Honor
Code:
The
University of Maryland, College Park has a nationally recognized Code of
Academic Integrity, administered by the Student Honor Council.
This Code sets standards for academic integrity at Maryland for all
undergraduate and graduate students. As a student you are responsible for
upholding these standards for this course. It is very important for you
to be aware of the consequences of cheating, fabrication, facilitation, and
plagiarism. For more information on the Code of Academic Integrity or the
Student Honor Council, please visit http://www.shc.umd.edu.
To further exhibit your commitment to academic integrity, remember to sign the
Honor Pledge on all examinations and assignments: "I pledge on my honor
that I have not given or received any unauthorized assistance on this
examination (assignment)."
Students
with disabilities:
Accommodations will be provided to enable students with disabilities to
participate fully in the course. Please discuss any needs with your instructor
at the beginning of the semester so that appropriate arrangements can be made.
Weather
and emergency closures:
If the University is closed due to weather or some emergency situation on a day
when homework is due, then that homework will be due by noon on the next day
when the University is open. If the University is closed on the scheduled date of an
exam, then the exam
will be given during your next regularly scheduled class period when the
University is open. If the University is closed on your regular class day in
any other (non-exam) week, including the "review" exercise week
before each exam, then the exam will still be given according to the
original schedule. In these or other exceptional circumstances, we will attempt
to communicate with students by email.