Atmosphere of Earth trend begin above 11 km, where the temperature stabilizes through a large vertical distance through the rest of the troposphere. In the stratosphere, starting above about 20 km, the temperature increases with height, due to heating within the ozone layer caused by capture of significant ultraviolet radiation from the Sun by the dioxygen and ozone gas in this region. Still another region of increasing temperature with altitude occurs at very high altitudes, in the aptly-named thermosphere above 90 km. Because in an ideal gas of constant composition the speed of sound depends only on temperature and not on the gas
Zombies of the Stratosphere and viewers found the serial to be relatively dull and unimaginative, not as interesting as "Radar Men from the Moon". The use of stock footage from earlier serials is not quite as overwhelming as seen in the earlier or later Cody outings, as greater emphasis is placed on fistfights rather than scenes using the rocket back-pack. Holdren's performance is often stiff and amateurish, especially when compared to the professionalism of the old Republic pros who surround him on screen. Cline describes this serial as just a "quickie." Zombies of the Stratosphere Zombies of the Stratosphere is a 1952 black-and-white Republic