Haas, Arthur Erich, 1884-1941, American physicist and educator, b. Bohemia. He was professor of physics at Vienna, Leipzig, London, and, from 1936, the Univ. of Notre Dame, South Bend, Ind. After first doing work in the history of science, he turned in 1909 to theoretical physics and made a number of proposals in the field of atomic physics, anticipating Bohr's theory of the atom. In 1920 he derived formulas for the isotope effect in rotational spectra. His writings include Wave Mechanics and the New Quantum Theory (1928).

Haas can refer to:

  • Haas School of Business (United States), a part of the University of California, Berkeley, named after Walter A. Haas, Jr.
  • Haas Automation, a machine tool company
  • Haas effect, a psychoacoustic effect, also known as the Precedence Effect or law of the first wave front, named for Helmut Haas
  • Haas Pavilion (United States), home of the University of California at Berkeley's basketball teams, named after Walter A. Haas
  • Newman/Haas Racing, an auto racing team in the Champ Car series co-owned by Paul Newman and Carl Haas
  • A common misspelling of the Hass variety of avocado.
  • the Seri name of the Honey Mesquite, Prosopis glandulosa
  • Hardware as a Service

Haas as a surname can refer to:

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