Latest Physikalisch-Technische Bundesanstalt Stories

2010-04-29 12:54:43

With its new molecular beam epitaxy facility, PTB continues to be the only metrology institute to produce primary quantum Hall effect resistance standards For a long time, the electrical units are feeling at home in the quantum world. In the endeavor to trace the entire International System of Units (SI) back to natural constants, they have long been in the lead - because, among other things, the resistance can be realized with the aid of the quantum Hall effect. The Physikalisch-Technische...

2009-12-23 10:14:14

The world's best caesium atomic clocks control Coordinated Universal Time (UTC), an atomic time scale on which the time zones used in everyday life are based. But also in navigation (GPS), astronomy, telecommunications, geodesy and physical fundamental research, accurate timing is of essential importance. Until recently, three of PTB's clocks belonged to the exclusive club of primary caesium atomic clocks. Now a fourth one, the caesium fountain clock CSF2, has joined in. This month, its data...

2009-12-10 13:38:53

PTB scientists receive award for concept of comparability and traceability of water analyses Clean water is a matter of survival for humans, particularly when it is used for drinking, cooking and for food manufacture. Therefore, the EU member countries have in several guidelines undertaken to guarantee their citizens sustainable clean drinking water. The requirement for this is, however, a water analysis that provides the exact values for possible toxic substances, which are then also...

2009-11-05 10:26:26

Coherent Inc., a world leader in laser technology with headquarters in the USA, and the PTB have joined their expertise in Terahertz technology Terahertz radiation still lies in a metrological no man's land "“ a metrology gap. The Physikalisch-Technische Bundesanstalt (PTB) can now close this gap. For the first time, a commercial Terahertz laser was traced back to the international system of units (SI) by measuring its output power absolutely. PTB achieved this success with a power...

2009-09-03 10:43:06

PTB researchers want to construct the "atomic clock of the future" much more simply and more compactly than the previous elaborate laboratory set-ups You imagine a clock to be different - yet the optical table with its many complicated set-ups really is one. Optical clocks like the strontium clock in the Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig could be the atomic clocks of the future; some of them though are already ten times more precise and stable than the best primary...

2009-07-06 11:41:52

PTB develops micro and nano coordinate measuring instrument for 3D objectsFrom the motion sensor to the computer chip - in many products of daily life components are used whose functioning is based on smallest structures of the size of thousandths - or even millionths - of millimetres. These micro and nano structures must be manufactured and assembled with the highest precision so that in the end, the overall system will function smoothly. Thereby, details are important - and therefore...

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  • Color; hue; complexion.
This word is Middle English in origin.