Standard atmosphere may refer to:
- A standard reference value for air pressure:
- Atmosphere (unit), an approximation of the value at sea level
- Atmospheric pressure, other reference values
- A model of how atmospheric pressure varies with altitude:
- The U.S. Standard Atmosphere, a series of models that give values for pressure, density, and temperature over a range of altitudes
- The International Standard Atmosphere (ISA), an international standard model, defining typical atmospheric properties with altitude, at mid-latitude
Famous quotes containing the words standard and/or atmosphere:
“Any honest examination of the national life proves how far we are from the standard of human freedom with which we began. The recovery of this standard demands of everyone who loves this country a hard look at himself, for the greatest achievments must begin somewhere, and they always begin with the person. If we are not capable of this examination, we may yet become one of the most distinguished and monumental failures in the history of nations.”
—James Baldwin (1924–1987)
“All sound heard at the greatest possible distance produces one and the same effect, a vibration of the universal lyre, just as the intervening atmosphere makes a distant ridge of earth interesting to our eyes by the azure tint it imparts to it.”
—Henry David Thoreau (1817–1862)