Physics 174 is an introductory physics lab course that meets for 1 hour and 50 minutes 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. This course is intended for, but not limited to, students who are majoring in Physics or are considering doing so.
Corequisite: Math 140 (Calculus I). You will have to know how to take derivatives of functions starting about one month into the course. It will also be helpful to have taken a high school (or college) physics course.
Books: The required texts are:
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. Prof. Roberts's section has a separate web area from Prof. Shawhan's sections, but our current plan is to keep the same information in both areas.
Section | Day | Time | Instructor | Teaching Assistant |
---|---|---|---|---|
0101 | Wednesday | 9:00am-10:50am | Prof. Shawhan | Sumit Gupta |
0301 | Wednesday | 1:00pm-2:50pm | Prof. Shawhan | |
0201 | Wednesday | 3:00pm-4:50pm | Prof. Shawhan | |
0401 | Thursday | 11:00am-12:50pm | Prof. Roberts |
We will skip Exercise 3 in the lab manual, but do both exercises 5 and 5* (five-star) .
Note the two exams on March 12/13 and May 7/8 !
Wednesdays | Thursdays | Topic |
---|---|---|
Jan 30 | Jan 31 | Exercise 1: Introduction to Excel |
Feb 6 | Feb 7 | Exercise 2: Measurement Error and Uncertainty |
Feb 13 | Feb 14 | Exercise 4: Straight Line Fits Using χ2 and Excel |
Feb 20 | Feb 21 | Exercise 5: Propagation of Errors |
Feb 27 | Feb 28 | Exercise 5*: Using χ2 to Test a Theory |
Mar 5 | Mar 6 | Exercise 6: Review of Spreadsheets and Errors |
Mar 12 | Mar 13 | Exam on Spreadsheets and Errors |
Mar 19 | Mar 20 | Spring Break - no classes |
Mar 26 | Mar 27 | Exercise 8: Resistors and Multimeters |
Apr 2 | Apr 3 | Exercise 9: Current and Voltage |
Apr 9 | Apr 10 | Exercise 10: The Digital Oscilloscope and the Function Generator |
Apr 16 | Apr 17 | Exercise 11: The Oscilloscope and AC Signals |
Apr 23 | Apr 24 | Exercise 12: Reflection of Voltage Pulses |
Apr 30 | May 1 | Exercise 13: Review of Circuits |
May 7 | May 8 | Exam on Circuits and Error analysis |
Prof. Peter S. Shawhan
Office: Room 4205-B
Phone: 301-405-1580
Email: pshawhan@umd.edu
Office hours: Fridays 4:00-5:30, either in my office or in the lab
TA: Sumit Gupta
Office: Room 3103-B (but office hours will be in the lab)
Email: gsumit@umd.edu
Office hours: Thursdays 3:00-5:00 in the lab
You can also stop by the lab during one of the other sections if you have questions about the equipment, in-class work, or homework.
Arriving late to class:
Classes at Maryland begin right on the hour. It is important that you
arrive at the lab on time so that you can get instructions for the lab
work and have time to finish. If you arrive more than 10 minutes late,
you will probably not be allowed to do the lab at that time
and will have to make it up during another section.
Making up missed labs:
If you must miss your regular lab section (due to illness,
a religious observance, or some other compelling reason),
then you should make that lab up
by going to another section that same week, if possible. Contact your
instructor and the instructor of the other section (if different) to
let them know that you need to do this and to check whether there is
space available. If you cannot attend another
section, contact your instructor ASAP and a time for a make-up lab will
be arranged. In general, this should be done during the same calendar
week as the lab is scheduled (so that the equipment for that lab is
still set up), and definitely no later than the following Tuesday.
The homework for the lab will be due by 10:00 pm on the second day after
you make up the lab.
Grading:
50% Lab Spreadsheets
20% Homework
15% Test on spreadsheet, errors and
measurements
15% Test on the oscilloscope and
electrical circuits
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
a problem on your own and 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 - that's what we get paid for!
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.studenthonorcouncil.umd.edu/whatis.html .
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.