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22 results:
  • 1. Kalibrierflüssigkeiten der Dichte  
    Date: 07.09.2022
    Percental score: 100 %
    ... be provided by PTB:   liquid Viscosity in mm²/s Benchmark for the density in kg/m³ (pressure 1013.25 mbar) 20 °C 5 °C 20 °C 40 °C 50 °C 70 °C n-Nonan 1 729 718 702 - 678 Reinstwasser 1 999 998 992 - 978...  
  • 2. E Glasschmelzen  
    Date: 07.09.2022
    Percental score: 68 %
    ... logarithm of the dyn....  
  • 3. HF attenuation measurement  
    Date: 12.05.2021
    Percental score: 46 %
    ... IEEE Transactions on Instrumentation and Measurement, Vol. IM-42, 6 (1993), S. 1009-1013   D. Stumpe: International Comparison...  
  • 4. Standard formula for compensation of the group velocity of electromagnetic waves corrected  
    Date: 16.11.2021
    Percental score: 41 %
    ... group refractive index for a given temperature t of 20 °C, an ambient air pressure p of 1013.25 hPa, a relative humidity e of 50 % relative humidity, and a carbon dioxide content xC of...  
  • 5. Now published: "Modern routine methods and quick procedures for the determination of Sr-89 and Sr-90 in environmental monitoring"  
    Date: 30.04.2008
    Percental score: 33 %
    ... GmbH, Cologne. It has a volume of approx. 210 pages and also contains a CD with the contents. ISSN: 1013-4506, ISBN: 978-3-8249-1119-6. H. Wershofen, Department 6.1, Working group 6.12 herbert.wershofen@ptb.de  
  • 6. PTB Mitt 2015 Einfuehrung ENG  
    Date: 23.01.2017
    Percental score: 30 %
    ... undulator radiation B II U49 B4b PGM B II U49 Plane grating 40 eV to 1860 eV 103 to 104 108 to 1013 0.14 ·  (0.015 to 1) 0.6 · 0.4 B5 BAMline B II WLS Double crystal / Double multilayer 8 keV to...  
  • 7. pub els98  
    Date: 24.02.2011
    Percental score: 30 %
    ... 110°C. The integral aerosol concentration in the radon reference chamber can be varied from 108 to 1013 m~3 using the aerosol generator. Typically, the diffusion mode is used for 108—1010 m~3, whereas the flow...  
  • 8. PTB News 3/2005  
    Date: 05.08.2010
    Percental score: 14 %
    ... were determined by infrared spectrometry: carbon 3 · 1015 cm–3, oxygen 4 · 1015 cm–3 and boron 3 · 1013 cm–3. The content of more than 99.99% 28Si in the crystal, determined at the Institute for Reference Materials...  
  • 9. pub ari00  
    Date: 24.02.2011
    Percental score: 13 %
    ... 1997). Well-de®ned aerosol distributions with an integral aerosol concentration ranging from 108 to 1013 mÿ3 and a mean diameter ranging from 30 to 300 nm can thus be produced. The lowest integral aerosol...  
  • 10. Figures and Facts 2013  
    Date: 26.03.2014
    Percental score: 13 %
    ... in diesen Jahren gehalten haben Veröffentlichungen Vorträge 2010* 2011* 2012* 672 670 706 1013 962 911 Number of publications by PTB staff members (in scientific journals, books, conference digests,...  
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