PHY132
Spring
2009 Practicals
Welcome! The Practicals part of your PHY132 courses
will involve problem solving, handson activities and teamwork. The goal is to work on interesting,
challenging experiments and activities, deepen your understanding of the
underlying Physics, and develop your laboratory skills and analysis
techniques. 
Jason Harlow, Practicals Coordinator Office: MP129A, Phone 4169464071,
Vatche Deyirmenjian, Practicals Cocoordinator Office: MP129B, Phone 4169460336
David Harrison,
Author of Practicals Modules
Office: MP121B, Phone 4169782977
April Seeley, Course Administrator Office: MP129, Phone 4169460531,
Larry Avramidis, Lilian Leung, Phil Scolieri,
Rob Smidrovskis, Practicals Technologists. Office: MP127.
Practical Schedule Students attend one 2hour practical every week. Weeks begin on a Wednesday and end on a Tuesday. 

Practical 
Dates 
Topics, Activities 

Jan 5  13 
NO
PRACTICALS 
1 
Jan 14  20 
Traveling
Waves Week
1 Student Guide
Waves Module 1

2 
Jan 21  27 
Standing Waves
Experiment Week
2 Student Guide
Waves Module 1

3 
Jan 28  Feb 3 
Optics Week 3 Student Guide Ray Optics
Module

4 
Feb 4  10 
EM Module 1 – Electric Charge and Coulomb’s Law · Activity 1, Parts A, B, D · Activity 4, Parts A, D, E, F · IF TIME: Activity 4, Parts G,H, I, J 

Feb 11  24 
NO PRACTICALS –
Extra office hours for test prep. 
5 
Feb 25  Mar 3

Scrambling teams EM Module 2 – Simple Circuits · Activities 1 to 6 · IF TIME: Activity 7 
6 
Mar 4  10 
EM Module 3 – Electric Fields · Activity 9, dipole and plates · IF TIME: Activity 6 
7 
Mar 11  17 
EM Module 4 – Resistance and Power · Activities 1–5 · Activity 6, Parts A, B, C · IF TIME: Activity 11 
8 
Mar 18  24 
EM Modules 5 and 6 – Capacitors and Magnets · Module 5, Activity 6 · Module 6, Activities 4, 5 · IF TIME: Module 6, Activity 9 
9 
Mar 25  31 
Special Relativity Week 9 and 10 Guide ·
Activities
1, 2, 3, 4 ·
IF
TIME: Activity 5 (Measurement Project due Mar.31) 
10 
Apr 1  7 
LAST
PRACTICAL: Special Relativity ·
Activities
6, 7, 8, 9, 12 ·
IF
TIME: Activity 10 
Here are the components and their weights:
is due on
March 31. It is worth 3 Weights (out of 15)
for the Practicals mark, or 3% of the course mark. PDF Format / Word Format / Web Format
Marking Scheme
Graduate Student Instructors
Section 
Day 
Time 
group 
Room 
TA1 
TA2 
P0101 
M 
13 
M2A 
MP125A 
Behi Fatholazadeh 
Omar Gamel 
P0101 
M 
13 
M2B 
MP125B 
Yonggang Liu 
Stefan Kissiov 
P0201 
M 
35 
M3A 
MP125A 
Ryan Vilim 
Roopa Pandharpurkar 
P0201 
M 
35 
M3B 
MP125B 
David MacKenzie 
Liang Ren 
P0301 
T 
1012 
T1A 
MP125A 
Ray Gao 
Guoying Qin 
P0401 
T 
13 
T2A 
MP125A 
Chris
Paul 
Nathaniel
Moore 
P0401 
T 
13 
T2B 
MP125B 
Catalina
Gomez Sanchez 
Jasper Palfree 
P0501 
T 
35 
T3A 
MP125A 
Sheetal Saxena 
William WitczakKrempa 
P0501 
T 
35 
T3B 
MP125B 
Niall
Ryan 
Adam Smiarowski 
P0601 
W 
13 
W2A 
MP125A 
Amir Feizpour 
Shervin Ghafrani Tabari 
P0701 
W 
35 
W3A 
MP125A 
Ryan Vilim 
Zhe Jiang 
P0701 
W 
35 
W3B 
MP125B 
JeanMichel
Delisle Carter 
Dongpeng Kang 
P0801 
R 
122 
R2A 
MP125A 
Joseph
Fitzgerald 
Xueping Zhao 
P0801 
R 
122 
R2B 
MP125B 
Wenlong Wu 
Kiyoshi
Masui 
P0901 
R 
24 
R3A 
MP125A 
Andre Erler 
Kiyoshi
Masui 
P0901 
R 
24 
R3B 
MP125B 
Chao Zhuang 
Stefan Kissiov 
P1001 
F 
1012 
F1A 
MP125A 
Dylan
Jervis 
Bijia Pang 
P1001 
F 
1012 
F1B 
MP125B 
Federico Duque Gomez 
Adam Smiarowski 
P1101 
F 
122 
F2A 
MP125A 
Luke
McKinney 
Nathaniel
Moore 
P1201 
F 
24 
F3A 
MP125A 
Hlynur Gretarsson 
Zhe Jiang 
P5201 
W 
68 
W4A 
MP125A 
Viacheslav Burenkov 
Xueping Zhao 
Notes on Errors
Every measurement has two parts: the value and the error. For example, I have measured my height to be 180 cm +/ 1 cm. 180 cm is the value, and 1 cm is the error.
When you make a measurement, you determine the value and you should always report the error. The error tells the reader how certain you are about your measurement. Saying my height is 180 cm +/ 1 cm means that I am about 68% certain that my true height falls within the range 179 to 181 cm (one sigma). [That means that if my height was measured 100 times, about 68 of the measurements would be within this range.] It also means I am about 95% certain that my true height falls within the range 178 to 182 cm (two sigma).
The error is never found by comparing it to
some number found in a book or web page!!
There are
many ways of estimating the error in a value.
Here are two examples:
Example 1: “Half the last digit”
If repeated digital measurements of the same property give the exact
same reading again and again, the error is often estimated to be half the power
of ten represented in the last digit.
For example, a repeated voltage measurement of 8.6 volts on a digital
multimeter which always displays 8.6 for a certain setup would be reported as
8.60 V +/ 0.05 V.
Example 2: “Standard Deviation”
In most situations, repeated measurements of the exact same quantity give
different values. These values tend to
be normally distributed around some mean.
You can use the values themselves and the mean to compute the standard
deviation, sigma. Sigma can then be used
as an estimate of the error in any one of the individual measurements. For example, I ask five friends to measure my
height using the same measuring technique.
They each obtain five slightly different values: 178.5 cm, 179.5 cm,
180.5 cm, 181.5 cm and 180 cm. The
standard deviation of these five values (computed from the formulae below) is
1.12 cm. Normally error is only reported
to one or at most two significant digits.
So the error in any of these values is estimated to be 1 cm. For example, the first measurement can be
reported as 179 cm +/ 1 cm.
Mean:
Standard Deviation (sigma):
The
following 37page document, written by David Harrison, is an excellent
introduction to errors (why this material is not standard for all introductory
physics textbooks I don’t know):
Error Analysis in Experimental Physical Science.