1. Fig. 34-15 Rainbows are formed by refraction, reflection, and dispersion in water drops. (a) Primary rainbow. (b) Secondary rainbow. red violet © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics

2. Fig. 44 The rainbow mechanism again. © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics

3. Fig. 34-16 Polarization (a) Transverse wave on a string, polarized in the y-direction. (b) Wave polarized in the z-direction. (c) Barrier with vertical slot passes the y- and blocks the z-polarized components. © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics

4. Fig. 34-17 Polaroid filter © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics

5. Fig. 34-18 Unpolarized light is incident on a polarizing filter. Law of Malus: I = I max cos 2  © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics

6. Fig. 34-20 Reflected light can be polarized. © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics