Density of Air

The density of air, ρ (Greek: rho) (air density), is the mass per unit volume of Earth's atmosphere, and is a useful value in aeronautics and other sciences. Air density decreases with increasing altitude, as does air pressure. It also changes with variances in temperature or humidity. At sea level and at 15°C according to ISA (International Standard Atmosphere), air has a density of approximately 1.225 kg/m3 (0.0023769 slugs/ft3).

Read more about Density Of Air:  Temperature and Pressure

Famous quotes containing the word air:

    The curfew tolls the knell of parting day,
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    Thomas Gray (1716–1771)