Ozone vacuum-ultraviolet (VUV) ozone generators, employ a light source that generates a narrow-band ultraviolet light, a subset of that produced by the Sun. The Sun's UV sustains the ozone layer in the stratosphere of Earth. UV ozone generators use ambient air for ozone production, no air prep systems are used (air dryer or oxygen concentrator), therefore these generators tend to be less expensive. However UV ozone generators usually produce ozone with a concentration of about 0.5% or lower which limits the potential ozone production rate. Another disadvantage of this method is that it requires the ambient air (oxygen) to be exposed
Zombies of the Stratosphere Zombies of the Stratosphere Zombies of the Stratosphere is a 1952 black-and-white Republic Studios serial directed by Fred C. Brannon, with a screenplay by Ronald Davidson, and special effects by Republic's Lydecker brothers. This was intended to be Republic's second serial featuring "new hero" Commando Cody and the third 12-chapter serial featuring the rocket-powered flying jacket and helmet introduced in "King of the Rocket Men" (1949). Instead, for reasons unknown, the hero was renamed "Larry Martin", who must prevent Martian invaders from using a hydrogen bomb to blow Earth out of its orbit, so that the Martians can move a