8 Wright, Stephen 274 WYSIWYG 237 X XPRIZE 238, 367 X-ray 69, 100 damage from 104 slicing technique 102 wavelength 102 Y Yellow Pages 308 Z Zar, Jerrold H 139 Zeitgeist 86 Zeno machine 280 Zeno’s paradox 154 Zermelo-Fraenkel set theory 156 zigzag method 182 HOUSE_OVERSIGHT_016108 Index 419 HOUSE_OVERSIG