PHY138 – Electromagnetism - Department of Physics
Transcript of PHY138 – Electromagnetism - Department of Physics
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PHY138Y EM Lecture 0 Slide 1
“Men and women are not content to comfortthemselves with tales of gods and giants, orto confine their thoughts to the daily affairs oflife; they also build telescopes and satellitesand accelerators, and sit at desks forendless hours working out the meaning ofthe data they gather.”
… Steven Weinberg(Nobel Prize in Physics 1979)
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PHY138Y - EM - Lecture 0 - Slide 2
PHY138 – ElectromagnetismLecture 0� Your new instructor: Prof. Kimberly Strong
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PHY138Y - EM - Lecture 0 - Slide 3
PHY138 – ElectromagnetismLecture 0� Your new instructor: Prof. Kimberly Strong
� My office: MP710A� My telephone: (416) 946-3217� Email: [email protected]
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PHY138Y - EM - Lecture 0 - Slide 4
PHY138 – ElectromagnetismLecture 0� Your new instructor: Prof. Kimberly Strong
� My office: MP710A� My telephone: (416) 946-3217� Email: [email protected]
� Tentative office hours: Tuesdays 12-1 andFridays 3-4, or by appointment
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PHY138Y - EM - Lecture 0 - Slide 5
Electromagnetism Quarter
� 6 weeks: January 8 to February 16, 2007
� Home page for this quarter(stay tuned for content):
http://www.atmosp.physics.utoronto.ca/people/strong/phy138/phy138.html
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PHY138Y - EM - Lecture 0 - Slide 6
Who Am I?
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Who Am I? What Do I Do?Professor of Physics• Teaching
→ PHY138, PHY315, PHY140 ...• Research
→ Scientist - Atmospheric Physicist→ Supervision of graduate students
and post-doctoral fellows
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PHY138Y - EM - Lecture 0 - Slide 7
Our First In-Class Quiz
When I grow up, I want to be:A. A doctorB. A physicistC. A scientist (but, sadly, NOT a physicist)D. None of the aboveE. I don’t know yet
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PHY138Y - EM - Lecture 0 - Slide 8
Our First In-Class Quiz
When I grow up, I want to be:A. A doctorB. A physicistC. A scientist (but, sadly, NOT a physicist)D. None of the aboveE. I don’t know yetF. Any of the above!
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What Do Scientists Do?
• Our goal is to expand human knowledge
• We study the world around us to understand it
• We explain how and why things happen, andpredict what will happen next
• We develop theories based on observations
• We try to use what we have learned to makeour world a better place
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Do You Want to Become aScientist? You need:
• A strong desire to learn new things!• Intelligence, curiosity, and imagination• Hard work, enthusiasm, patience, and tenacity• Enjoyment of problem-solving• Attention to detail• An ability to communicate your ideas• Integrity, honesty, and responsibility• Respect & appreciation for your predecessors
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The Rewards
• Learning new things!• Contributing to human knowledge• Making a difference• Knowing that what you are doing is, or will be,
valuable to someone, somewhere• Opportunities to travel and collaborate with
scientists around the world• Many career possibilities
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Atmospheric Physics
the application of physics to thestudy of the evolution and present
state of the Earth's atmosphere
My Research - Experimental Atmospheric Physics• Remote sounding of atmospheric composition from
the ground, balloons, and satellites• Ultraviolet-visible-infrared spectroscopic techniques
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Electromagnetic Spectrum
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Atmospheric Remote Sounding“Measurement at a distance”• Information is carried by electromagnetic radiation• Based on spectroscopy which is the study of EM
radiation that has interacted with matter
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Our Basic Tool: Spectrometer
Diffraction Grating
Lens
Entrance Slit
Detector
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Research Projects• Arctic ozone depletion
% difference in January-June averageozone columns between 1987 and 1997
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Research Projects• MANTRA balloon campaigns to study ozone layer
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MANTRA 98: “The one that got away”
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Research ProjectsAtmospheric Chemistry Experiment• Carries two instruments to measure gases and aerosols• Goal: to gain a better understanding of stratospheric
ozone processes
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Research Projects
U of TorontoAtmosphericObservatory
• Daily measurements -air quality and theozone layer
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Science is a Team Effort
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How Did I Become a Scientist?
We are all scientists when young!
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How Did I Become a Scientist?• B.Sc., Memorial University of Newfoundland• D.Phil., Atmospheric Physics, Oxford• Post-doctoral fellow, Cambridge & York U
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PHY138Y - EM - Lecture 0 - Slide 9
Back to PHY138….
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PHY138Y - EM - Lecture 0 - Slide 10
Syllabus for Q3 - Electromagnetism
(parts of) Chapters 25, 26, 28, 29, 30, 31, 32� Electric Forces and Electric Fields� Electric Potential Energy� The Electric Potential� Equipotentials and Energy in Capacitors� Currents, Resistance, and Resistivity� Circuits and Kirchoff’s Laws� Magnetic Fields and Magnetic Force
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PHY138Y - EM - Lecture 0 - Slide 11
Feedback from You - 1 (Surveysand Representative Assemblies)Lectures� Like announcements, demos, animations� Clicker questions - useful
� like to have them solved on screen� request for challenging questions!
� Student questions - mixed reaction� request to read the questions answered� I will try to limit my answers to physics Q’s
� Examples - you want more ...
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PHY138Y - EM - Lecture 0 - Slide 12
Feedback from You - 2 (Surveysand Representative Assemblies)
Tutorials� Mixed response to Student Workbook Q’s� Request to post the list of Student Workbook
questions on the web� I will do this, along with the suggested problems
� I will give TAs solutions to both, so you andyour TA can decide what to cover each week
� We want the tutorials to be a group activity,not just watching the TA solve problems
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PHY138Y - EM - Lecture 0 - Slide 13
Dates to Remember for the FirstWeek of Q3 ...� The first week’s reading assignment is
Chapter 25 of Knight, Sections 25.1 to 25.6
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PHY138Y - EM - Lecture 0 - Slide 14
Dates to Remember for the FirstWeek of Q3 ...� The first week’s reading assignment is
Chapter 25 of Knight, Sections 25.1 to 25.6� 10:00 AM, Monday, January 8:
Finish the first Mastering Physics pre-classquiz on this reading assignment
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PHY138Y - EM - Lecture 0 - Slide 15
Dates to Remember for the FirstWeek of Q3 ...� The first week’s reading assignment is
Chapter 25 of Knight, Sections 25.1 to 25.6� 10:00 AM, Monday, January 8:
Finish the first Mastering Physics pre-classquiz on this reading assignment
� 11 AM, Monday, January 8:Our first lecture of 2007 here in Con. Hall
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PHY138Y - EM - Lecture 0 - Slide 16
Dates to Remember for the FirstWeek of Q3 ...� The first week’s reading assignment is
Chapter 25 of Knight, Sections 25.1 to 25.6� 10:00 AM, Monday, January 8:
Finish the first Mastering Physics pre-classquiz on this reading assignment
� 11 AM, Monday, January 8:Our first lecture of 2007 here in Con. Hall
� 11:59 PM on Friday, January 12:Finish the first MP problem set
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PHY138Y - EM - Lecture 0 - Slide 17
Have a great break!(and read Chapter 25)
See you on January 8