Fig Wave front at a time dt after passing thru a stationary plane © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics

Fig A radio station (or cell phone) radiates E-M waves into the hemisphere shown. © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics

Table 33-1 Wavelengths of visible light nm Violet nm Blue nm Green nm Yellow nm Orange nm Red © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics

Fig The E-M spectrum. The frequencies (Hz) and wavelengths (mm) are shown. © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics

Review © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics