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Here you will find the news as well as a short guide to PTB


In der Führungsebene der Physikalisch-Technischen Bundesanstalt (PTB) steht ein wichtiger Personalwechsel an. Ab 1. Mai des kommenden Jahres wird die Physikerin Prof. Dr. Cornelia Denz von der Westfälischen Wilhelms-Universität Münster die PTB leiten. Der derzeitige PTB-Präsident, Prof. Dr. Dr. h. c. Joachim Ullrich, der die Präsidentschaft seit dem Jahr 2012 innehat, scheidet dann altersbedingt aus. In der 135-jährigen Geschichte der PTB wird Cornelia Denz die erste Frau an der Spitze des nationalen Metrologieinstituts Deutschlands sein. Sie erhielt ihre Berufung in dieses höchste Amt der nationalen Metrologie vom Bundesminister für Wirtschaft und Energie (BMWi), Peter Altmaier, in dessem Ressort die PTB angesiedelt ist. Das Ministerium folgt mit dieser Berufung dem einstimmigen Vorschlag einer mit Vertreterinnen und Vertretern aus Wissenschaft und Wirtschaft prominent besetzten Findungskommission.

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“Your temperature is 102 degrees – that’s a fever!” “Excuse me?” You could experience a confusing conversation like this if you feel ill during your vacation in the U.S. and need to see a doctor. Temperatures are measured in Fahrenheit in the U.S.; 102 degrees Fahrenheit are equivalent to 38.9 degrees Celsius. This type of confusion (or even serious misunderstandings!) occurs very rarely – at least when measurement units are used in science. We can thank a historical event which is commemorated on 20 May each year on World Metrology Day for this: the establishment of the Metre Convention. This contract was signed in 1875 by the most important industrial nations of that era. Since that date, almost all other countries in the world have followed suit and pledged to use only metric units. The U.S. and a few other countries represent a minority which still uses Anglo-Saxon units – but only in daily life. The metric system and the...

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A brief introduction to PTB

Entrance of PTB Braunschweig

Here in a nutshell are a few Opens internal link in current windowFacts about PTB, or read the current facts and figures from the Opens internal link in current windowAnnual Report. If you want more details, here you will find a Opens internal link in current windowDescription of Tasks of PTB. Furthermore, we recommend our general Info Sheet about PTB which you can download in the right-hand column as a pdf file.

Important research topics

The SI with its 7 base units
In the new International System of Units (SI), seven fundamental constants are determined as defining reference values. (Diagram: PTB)

We present you with an overview of PTB's diverse research landscape as well as some especially highlighted topics in the chapter l Opens internal link in current windowResearch & Development, including the key strategic points in European metrology research (Opens internal link in current windowChallenges and Prospects) as well as the various success stories surrounding Opens internal link in current windowPTB's Technology Transfer. How firmly PTB is integrated in the international research landscape you can see briefly, on the one hand, in the Opens internal link in current windowOverview and, on the other hand, we individually present the respective research institutes of the worldwide metrology landscape in the chapter Opens internal link in current windowInternational Affairs.


Evaluation report (in Geman only)
Stand: Januar 2012

In 2002, PTB as a whole was evaluated – with an excellent outcome. In 2008, an evaluation of PTB research followed, carried out by the Wissenschaftsrat (German Council of Science and Humanities) with a subsequent Implementation Report in 2012. You will find more about this at Opens internal link in current windowPTB in the World of Research or in the pdfs of the evaluation reports which you can download in the right-hand column.

The next evaluation will follow in 2016.