# Physics 195: Waves and Fields

## Syllabus · Spring 2015 Prof. Kate Jones-Smith

Lecture: 10-10:50 am MWF, G041
Office Hours: WR 3-5pm and by appointment, G051 or 1038
Email: kjonessm@hamilton.edu

 Text: Halliday, Resnick & Walker, Fundamentals of Physics, Extended, 10th edition. Taylor, An Introduction to Error Analysis, 2nd edition.

### Description:

The concepts of waves and fields, and the related mathematical formalism, are of great importance in physics. In this course we will study these constructs in the context of three main areas. First, we study oscillations beginning with the single most important physical sys- tem, the simple harmonic oscillator. We broaden this analysis to include the presence of damping, driving and resonance, and derive the wave equation and properties of waves. We then turn to electromagnetism to study basic configurations of electric and magnetic fields, the Lorentz force, and electromagnetic radiation. Finally we study various properties of light, beginning with geomet- ric optics in which light is treated as a ray, and then turning to the diffraction experiments which reveal the wave nature of light. This material corresponds to roughly Chapters 15-36 in HRW, though a few chapters will be omitted.

### Homework and Reading Quizzes:

Homework will be assigned weekly and posted to Black- board. It will consist of both reading and exercises. As discussed on the first day of class, it is imperative that you do both the assigned reading and the exercises in order to do well in this course and get the most out of it. There will be unannounced quizzes whose questions will be taken directly from the reading, based on or identical to the Checkpoints or odd-numbered Conceptual Questions in HRW. I will drop your 2 or 3 lowest quiz scores at the end of the semester. Late homework is not accepted unless you make arrangements with me first; generally speaking it is much easier for me to accommodate late homework if you can provide some documentation of your circumstances (e.g. note from doctor, coach, etc.).

### Lab:

Experiments are at the heart of every scientific discipline and lab is a mandatory part of this course. The purpose of the lab for this course is to familiarize you with relevant experi- mental techniques, most importantly the analysis of errors. Lab is held Tuesday and Wednesday from 1-4 pm with me (Tuesday) or Dr. Adam Lark (Wednesday). You must attend all labs this semester. If you cannot make your ordinary lab section you must attend the other section, as we generally do not have a make-up lab at the end of the term. If you cannot attend either section you must discuss your circumstances with your lab instructor and have a valid, documented excuse.

### Exams:

There will be two exams during the semester and one cumulative final exam during finals week. Please see itinerary below for dates. The exams will take place during lab and you have the option of attending either section.

Your grade will be determined according to the following scheme:
Homework: 15%
Lab: 20%
Exam 1: 15%
Exam 2: 15%
Final Exam: 20%

### Etiquitte & Policies:

Physics can be a challenging subject for many. Please maintain a respectful attitude in lecture, lab, and office hours. Laptops, cell phones, tablets, etc. are not allowed in lecture. If you wish to take notes it should be on paper by hand. If this poses any difficulty for you whatsoever please let me know and we can find a solution that suits your needs.

### Accommodations:

I request that anyone needing academic adjustments or accommodations speak with me during the first two weeks of class. All discussions will remain confidential. Students with disabilities should also contact Allen Harrison, Associate Dean of Students for Multicultural Affairs and Accessibility Services in the Office of the Dean of Students (Elihu Root House; ext. 4021) who coordinates services for students with disabilities.

 Week & Dates Topics Covered Lab 1: Jan 20-23 Syllabus & Simple Harmonic Motion Simple Oscillations 2: Jan 26-30 Harmonic Motion Continued Exploring Pendula 3: Feb 2-6 Intro to Waves and the Wave Equation Pendula and g 4: Feb 9-13 Properties of Waves Resonance 5: Feb 16-20 Properties of Waves and Review Exam 1: Feb 17 or 18 6: Feb 23-27 Charge & Electric Fields Waves on a String 7: Mar 2-6 Gauss’s Law, Electric Potential Speed of Sound 8: Mar 9-13 Moving Charges & Current Electroscopes 9: Mar 30-Apr 3 Magnetic Fields & Lorentz force law B field mapping 10: Apr 6-10 Electromagnetic Waves Exam2: Apr7or8 11: Apr 13-17 Geometric Optics qv × B 12: Apr 20-24 Optical Instruments Snell’s Law 13: Apr 27-May 1 Interference and Diffraction Thin Lenses 14: May 4-8 Polarization, other cool stuff Interference and Diffraction 15: May 11-15 Last Day of Class May 11 No Lab 16: May 16 Final Exam for 195 Sat. May 16 2-5 pm