Atmosphere generator

Atmosphere generators are terran devices used for providing a breathable atmosphere in areas where such a thing is not present.

Overview
Large and bulky, atmosphere generators are a meter by a meter and a half in area and weigh over a metric ton. Upon activation, a generator attatches itself to the surface on which it resides and begins to emit a low humming sound. Soon after this, the combined power of activated generators creates a blinding flash, which results in a protective dome over a wide area. The atmosphere is blue, akin to the sky of Earth, though pulses and glows.

After the creation of the atmospheric shell, it takes four hours for a breathable atmosphere to be created (albeit a cold and dry one) and several more for temperatures to build up to a comfortable level. After that, it takes about a month to adapt to the atmosphere, the occassional bleeding nose being a side effect, seemingly due to a thinner than usual atmosphere. In addition, the atmosphere never changes asthetically or physically, which can give a feeling of monotomy to those dwelling within it.