SUPERSTRINGS AND OTHER THINGS The sound of music Musical instruments The Shockwaves Ultrasound 17 OPTICS 370 Reflection of light Reflection from mirror Curved mirrors Refraction of light The frontiers of physics: Gradient-index lenses Total internal reflection Optical instruments The human eye The frontiers of physics: Artificial vision 1 8 THE NATURE OF LIGHT The The speed of light The electromagnetic spectrum Color 417 421 Polarization 425 Physics in our world: Compact disc player 435 PaRT 7: MODERN PHYSICS 19 THE SPECIAL THEORY OF RELATIVITY 441 Galilean relati The Michelson-Morley experiment Einsteins postulates Time dilation The frontiers of physics: Intergalactic travel Length contraction 7B5 $ # ! 761 ! " 761 * " 765 !! 7;1 '% 7;6 7;5 35 752 < ! & 752 D ! & 752 D !" " 75B " 75; ! ! & 7A2 $ % 9 7A= D 7=2 " 7=7 " 7== $ / B27 3A . / B26 % ! & B26 ! & B2; "& " B33 B37 8 & ! " B35 &C +" B13 ? B16 / B72 ' ! B7B & B76 3= / . / 4 BB3 BB3 *E* +" BB6 C BB= " B67 $ 5 B6A " B;2 /& B;1 +