The Physikalisch-Technische Bundesanstalt (PTB) is based in Braunschweig (Brunswick) and Berlin. It is the national institute for natural and engineering sciences and the highest technical authority for metrology and physical safety engineering in Germany. Part of its brief is the accurate measurement of time. It is responsible for four German caesium atomic clocks, CS1, CS2, CSF1 and CSF2, and the longwave time signal DCF77. In addition, the PTB operates time servers for the distribution of time on the internet. They are also responsible for the certification of voting machines for the German federal and European elections. The PTB was originally founded in 1887 as the Physikalisch-Technische Reichsanstalt (PTR) (the Physical and Technical Institute of the German Reich). The goal of the organization was supervising and directing calibration and establishing metrological standards. Research areas included spectroscopy, photometry, electrical engineering, and cryogenics. Werner von Siemens was instrumental in its establishment. Until 1934 the PTR was part of the Reichsinnenministerium (the Reich's Ministry of Interior Affairs).

Address
Bundesallee 100, Braunschweig, Germany
Website
http://www.ptb.de/index_en.html
Wikipedia
http://en.wikipedia.org/wiki/Physikalisch-Technische_Bundesanstalt

Some content from Wikipedia, licensed under CC BY-SA

Subscribe to rss feed

EVgo latest in hot US electric auto sector to publicly list

California-based EVgo is set to join the parade of companies jumping on public equity markets following a transaction announced Friday to raise $575 million to accelerate the build-out of electric charging stations in the ...

Ambulances queue at hospitals as virus surge slams Portugal

Ambulances waiting to deliver COVID-19 patients queued outside hospital emergency departments Friday as Portugal's COVID-19 surge continued unabated, adding a new record of daily deaths for the fifth day in a row.

AstraZeneca warns of limited vaccine supplies to Europe

British pharmaceutical firm AstraZeneca warned Friday that supplies of its coronavirus vaccine to Europe will be "lower than originally anticipated" due to reduced production at a manufacturing site.

Exercising muscle combats chronic inflammation on its own

Biomedical engineers at Duke University have demonstrated that human muscle has an innate ability to ward off the damaging effects of chronic inflammation when exercised. The discovery was made possible through the use of ...

Astronomers discover first cloudless, Jupiter-like planet

Astronomers at the Center for Astrophysics | Harvard & Smithsonian have detected the first Jupiter-like planet without clouds or haze in its observable atmosphere. The findings were published this month in the Astrophysical ...

page 1 from 4