Logo PTB
Symbolbild "News"

Press releases 2001

"Erster Prototyp eines Quantenvoltmeters" - "Dem Nullpunkt ein Stück näher" - "Vereinfachte Messung optischer Frequenzen". Mit diesen und anderen Überschriften zu wissenschaftlichen Nachrichten beginnt er, stellt danach die Zahlen und Fakten des vergangenen Jahres zusammen und blickt mit umfangreichen Berichten und Meldungen in die verschiedenen Fachabteilungen: Der Jahresbericht der...

[ more ]

[ptb]In Brazil, too, there is a lack of engineers, and the Brazilian metrology institute is also still in need. The Instituto Nacional de Metrología, Normalizaçao e Qualidade Industrial - briefly referred to as INMETRO - was founded in Xérem (near Rio de Janeiro) in 1968 with German support. At that time, the cooperation with the Physikalisch-Technische Bundesanstalt was already three years old....

[ more ]

[ptb]As a handyman one is usually very well served with measuring tape and slide gauge. However, if a length is to be precisely measured for industrial purposes, more exact measures are a must. Light is especially well suited for this purpose, as an extremely fine subdivision is possible: about 100 wavelengths fit in the diameter of a human hair. And as light radiation can moreover be very well...

[ more ]