Definition:Standard Atmosphere/Also defined as

Standard Atmosphere: Also defined as

The standard atmosphere was originally defined as:

The amount of pressure that will support a column of mercury $760$ millimetres high at $0 \cels$ at sea level at latitude $45 \degrees$.

However, after having been redefined to be exactly $101 \, 325$ pascals, the standard atmosphere is now approximately $759.99998 \, 92$ millimetres of mercury.

Also see

• Definition:Standard Atmospheric Pressure

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): atmosphere
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): atmosphere