Introduction to Physics s2

INTRODUCTION TO PHYSICS

LECTURE OUTLINE 4

GENERAL TOPIC: LIGHT

ASSIGNMENT: Conceptual Physics, Hewitt, 11th edition. Read part 6, Chapters 26-31

Prepare to discuss in class the following exercises: Ch. 26: Exercises: 3, 5, 7, 10, 14, 20, 22, 26, 29, 34, 35, 38, 43, 49 Problems: 1, 3, 6, 7 Ch. 27: Exercises: 2, 3, 8, 10, 13, 15, 18, 23, 25, 26, 30, 33, 36, 40, 43, 47 Ch. 28: Ranking: 1, 3, 4 Exercises: 2, 4, 7, 12, 15, 18, 19, 24, 27, 29, 33, 37, 44, 49, 56, 59 Problems: 2, 4, 6, 7 Ch. 29: Exercises: 1, 3, 7, 10, 13, 17, 20, 21, 26, 30, 32, 36, 40 Ch. 30: Exercises: 1, 3, 5, 11, 12, 13, 18, 22, 24, 28, 31, 36, 42, 43, 46, 47 Problems: 1 Ch. 31: Exercises: 4, 6, 8, 9, 10, 11, 17, 20, 25, 32, 33, 37, 44, 49 Problems: 1, 2, 3 Take Practice Exam Page 564

I Properties of Light A. Electromagnetic waves 1. Velocity 2. Energy spectrum B. Materials 1. Transparent 2. Opaque C. Color 1. Reflection and transmission 2. Color mixing a. Light b. Pigments c. Rules D. Applications of color 1. Blue sky 2. Red sunsets 3. White clouds 4. Greenish blue water E. Vision

II Reflection and Refraction A. Principle of least time B. Law of reflection 1. Plane mirrors 2. Curved mirrors a. Concave b. Convex C. Refraction and its causes 1. Dispersion and rainbows 2. Lenses and image formation a. Convex (double) b. Concave (diverging) D. Internal reflection

III Light as a Wave A. Huygen's Principle B. For waves only 1. Diffraction 2. Interference a. Thin films b. Single color c. Multi color C. Polarization D. 3-D viewing E. Holography

IV Light as a Particle A. Emission of light 1. Excitation of atoms 2. Emission and absorption spectra B. Light production 1. Incandescence 2. Fluorescence 3. Phosphorescence C. Lasers 1. Origin and production 2. Applications D. Quantum Theory 1. Planck's Constant 2. Photoelectric effect E. Wave-particle duality 1. Diffraction-interference of electrons 2. The photon F. Uncertainty principle G. Complementarity