Science and Mathematics
- Quadriceps, a group of muscles
- Quadruped, a creature or mechanism which moves on four legs
- Quad (energy), a unit of energy (short for quadrillion) defined as 1015 British thermal units (about 1.055 exajoule (EJ) or 1.055 × 1018 J)
- Quadrilateral, a four sided figure in plane geometry
- Quadratic, the second power in mathematics
- Quadrangle (geography), a 7.5-minute topographic map produced by the United States Geological Survey, covering in greater detail one quarter of the area of a 15-minute map
- Quadrilateralized Spherical Cube, a mapping scheme for data collected on a spherical surface, such as a planet
- QUaD, a telescope located at the South Pole that is designed to measure the cosmic microwave background radiation polarization
- Quadratic Formula, the equation used to solve quadratic equations
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Famous quotes containing the words science and, science and/or mathematics:
“There does not exist a category of science to which one can give the name applied science. There are science and the applications of science, bound together as the fruit of the tree which bears it.”
—Louis Pasteur (1822–1895)
“The motive of science was the extension of man, on all sides, into Nature, till his hands should touch the stars, his eyes see through the earth, his ears understand the language of beast and bird, and the sense of the wind; and, through his sympathy, heaven and earth should talk with him. But that is not our science.”
—Ralph Waldo Emerson (1803–1882)
“In mathematics he was greater
Than Tycho Brahe, or Erra Pater:
For he, by geometric scale,
Could take the size of pots of ale;
Resolve, by sines and tangents straight,
If bread and butter wanted weight;
And wisely tell what hour o’ th’ day
The clock doth strike, by algebra.”
—Samuel Butler (1612–1680)