Summer, 2002

Laboratory Grades: The laboratory is a required part of this course; it is not optional. To pass Physics 221, you must complete satisfactorily all the scheduled assignments and experiments in timely fashion (pre-labs must be done before labs). Failure to do so will result in an F grade for the entire course. Your effort on the pre-labs and in laboratory also will be reflected a numerical grade determined by your recitation/lab instructor; in addition, a portion of the final exam will be devoted to questions related to the laboratory. Refer to your lab manual for additional information concerning what is expected of students in the laboratory.

Laboratory Waivers: If you are repeating this course and successfully completed the lab portion previously, you may request an optional waiver of the laboratory. Inquire in Room 12 for details. Note that (1) such waivers must be requested at the beginning of the semester, and (2) if you are granted a lab waiver, you will be required to attend and participate in recitation, and your recitation/lab grade will be based exclusively on your recitation performance. You also will take the same final exam as other students, including the lab questions.

Absences from Laboratory: Valid reasons for missing your scheduled classes include illness, a family emergency or a conflicting University activity. The following procedures are to be followed in case of an excused absence from lab.

1. Whether you use Method "A" or Method "B" described below, you must do the following for your work to be accepted by your regular instructor for grading:

a. have your work (pre-lab and lab) signed and dated before you leave the lab room by the lab instructor who is present when you do the make-up lab;

b. complete and attach to your work the Make-up Work Cover Sheet (copies are available in lab and Room 12);

c. deliver promptly (i.e., the day the work is performed) the cover sheet and work to your regular instructor (e.g., his/her office, or the homework box in Room 12, or the similar box outside the south door to Room 12);

d. provide your instructor with a written explanation of your absence (see format below); this note must reach your instructor's person, office or mail box as soon as it is reasonably possible.

e. have permission of the lab supervisor in cases involving more than two make-ups during the semester. No more than two make-ups will be accepted without prior approval of the lab supervisor. A student who is unable to attend his/her regular lab class because of frequent conflicts must process a section change with the registrar's office; the make-up procedure may not be used in such cases.

2. Method "A" (The Preferred, Common Method): If possible, perform the experiment that you missed promptly (while the apparatus is still available) in a lab section other than your own if there is room in that class. (In summer when there are only a few sections, this is not as useful an option as it is during the regular academic year.) Inform the presiding instructor at the beginning of class of your desire to do the experiment; if after class begins there still is sufficient space for you, normally the instructor will permit you to stay (in those rare cases when there is not sufficient space, you will have to leave). Note that in the case of an absence that can be foreseen, the make-up lab may be performed before your regularly scheduled lab. All the dates and times when particular experiments are available can be learned by examining the lab schedule (on the previous page).

3. Method "B” (Replacement Experiment Method): If you were unable to perform the missed experiment as described above, come to class at one of the times listed below and be prepared to perform makeup experiment #1 (Newton’s Second Law); if you have missed two experiments, then you will also have to perform (at a second makeup time) makeup experiment #2 (Electric Potential and Fields). During these days, a maximum of two experiments may be performed to make up for experiments missed during the semester. It will not be possible to make up more than two experiments during these days. You may attend at any of the scheduled times that is convenient. However, be warned--if you wait until the last scheduled makeup period, there is no guarantee that there will be room for you. Toward the end of the semester, copies of the write-ups for make-up experiments #1 and #2 will be available for those who need them in the lab room and in Room 12.

Schedule for the special make-up experiments in Room 64 (dates shown are in the last week of classes):

Monday, Aug. 5 9:50 - 12:00, 1:20 - 3:30, 3:40 - 5:50

Thursday, Aug. 8 7:30 - 9:40, 12:10 - 2:20, 2:30 - 4:40

4. Students who ignore these procedures should expect to receive a failing grade for the entire course. Questions concerning these procedures and cases of unusual hardship should be referred to the faculty supervisor of the laboratory. The rare case of an unintentional absence without good cause should be discussed with your lab instructor.

The format for the required written explanation for an absence is shown below. You may copy the format by hand.

Physics 221 Laboratory

Your Name: Date:

Your Lab Section: Your Lab day and time:

Your regular lab Instructor's Name:

Date of Absence: Experiment Missed:

Reason for Absence: