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My preferred dome design is three concentric shells. The innermost one would be a semipermeable membrane (burlap) with a low pressure area above it. The whole thing would be a filter that would be cleaned with a steam cleaner on an arm. Else a broom.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.tragectory: Line goes down and to the right.
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