/reference> report H1982 <b>Vakuum</b></p>
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<p>Die Physikalisch-Technische Bundesanstalt (PTB), Braunschweig und Berlin, ist das nationale Metrologie-Institut mit wissenschaftlich-technischen Dienstleistungsaufgaben. Sie misst mit höchster Genauigkeit und Zuverlässigkeit – Metrologie als Kernkompetenz.<br />Da dies so ist, ist auch niemand da, den man fragen könnte: Was ist denn nun das <b>Vakuum</b></p>
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