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


In cooperation with the Max Planck Institute for Nuclear Physics in Heidelberg, the QUEST Institute at PTB has succeeded for the first time in performing precision spectroscopy on highly charged ions. This pioneering experiment makes the field of highly charged ions accessible for research on novel atomic clocks and tests of fundamental physics.

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Eine Thorium-Kernuhr könnte noch einmal deutlich genauer sein als alle bisherigen Cäsium- und auch die optischen Atomuhren. Das verspricht Vorteile für die Anwendungen präziser Zeit- und Frequenzmessung, aber auch für physikalische Grundlagenforschung. Nachdem das internationale Forschungskonsortium mit mehreren Veröffentlichungen bereits gezeigt hat, dass eine solche Uhr grundsätzlich realisierbar ist, zeigt nun der europäische Forschungsrat sein Vertrauen in das Projekt, indem er es mit insgesamt 13,8 Millionen Euro fördert. An dem interdisziplinären und internationalen Projekt „Thorium Nuclear Clock“ sind neben der Physikalisch-Technischen Bundesanstalt (PTB) Wissenschaftler aus Wien, München, Delaware (USA), Heidelberg und Aachen beteiligt. Das Synergy Programm des European Research Council (ERC) ist die am höchsten dotierte Forschungsförderung des ERC und konzentriert sich insbesondere auf Themen mit hohem Innovationspotenzial, die...

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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.