Note:  Do not rely on this information. It is very old.

Homogeneous Atmosphere

Homogeneous Atmosphere is a conception of some utility.- A uniform and homogeneous atmosphere of height about 26,000 feet, and of density throughout equivalent to the present density of the actual atmosphere at the.earth's surface, would, give, a pressure equal to the actually-existing pressure. Such a state of things does not exist, the eeir reaching to a far greater height and diminishing continuously in density on account of the smaller pressure bearing upon it as the height is increased.