Definition of “Standard Atmosphere”
The Standard Atmosphere is a model used to estimate the behavior of the Earth’s atmosphere under certain conditions. At sea level, the Standard Atmosphere is defined as having a barometric pressure of 29.92 inches of mercury (Hg) or 1013.2 millibars, and a temperature of 15°C (59°F).
This means that if you were to measure the atmospheric pressure and temperature at sea level at a given point in time, and they corresponded to these specific values, then the conditions would be considered “standard”. However, the actual atmospheric conditions can vary greatly due to weather patterns, altitude, and other factors, and may deviate significantly from these standard values.
The Standard Atmosphere is used as a reference point for a variety of purposes in aviation, engineering, and meteorology. By providing a standard set of values, it enables scientists and engineers to make calculations and design systems that will function effectively under a wide range of atmospheric conditions. Overall, the Standard Atmosphere is an important tool that helps us to better understand and predict the behavior of our planet’s atmosphere.
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