Physikalischund

Physikalisch-Technische Bundesanstalt (PTB) is a German national metrology institution based in Braunschweig, Germany. The name is often abbreviated to "Physikalisch-und in English it translates to "Physical and Technical Federal Authority". Founded in 1887, PTB is responsible for metrology in Germany and is a member of the European Metrology System (EURAMET).

PTB's main task is to ensure the accuracy and reliability of physical measurement standards, which are used in science, industry, and trade. It has a wide range of areas of work, including the development of measurement standards, the calibration of precision instruments, and the performance of testing and certification for various products.

The institution is divided into several departments, each with its own area of expertise. This includes the departments of time and frequency metrology, as well as the fields of physical measurement standards and micro and nanomeasurements. PTB works closely with other national and international metrology institutions and organizations, such as the International Committee for Weights and Measures (ICWM).

PTB's work is essential for maintaining the accuracy and comparability of measurements worldwide. Its precise standards and measurements provide a foundation for international trade, scientific research, and technological innovation. Additionally, PTB is also involved in research and development, focusing on the advancement of measurement techniques and standards.

Through its activities, PTB plays a critical role in ensuring the reliability and accuracy of measurements in Germany and internationally, thus supporting the development of science and technology.