Sustinski vakuum od -1bar ne postoji, osim u relativnim merenjima u odnosu na okolni pritisak.
[url=http://217.26.67.168/uploads/3/6/3639364/Vacuum%20measure.JPG][img]http://217.26.67.168/uploads/3/6/3639364/.th.Vacuum%20measure.JPG[/img][/url]
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