H

  • Hales, Stephen, 263

  • Half-life, 469470

  • Half planes, 559

  • Halley, Edmund, 684

  • Harmony, in music, 496

  • Hawass, Zahi, 462

  • Height, inferring from femur, 205

  • Hipparchus of Rhodes, 497

  • Honeybees, 716, 720721

  • Hooker Telescope, 661

  • Horizontal asymptotes, of a rational function, 387388, 391392

  • Horizontal ellipses, 678

  • Horizontal lines, equations of, 203

  • Horizontal-line test, 295296

  • Horizontal shifts of graphs, 263266

  • Horizontal stretching/compressing, 271272

  • Hounsfield, Godfrey, 527

  • Hounsfield numbers, 534

  • Hubble, Edwin, 661

  • Hubble’s Law, 661

  • Hubble Space Telescope, 661, 670671

  • Humphries, Robert, 778

  • Hyperbolas, 660, 690706

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