| Zugriffsnummer | 17432 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Mass determination of silicon spheres used for the Avogadro project |
| Autor(in); Institution |
Borys, Michael; 1.1, Masse, PTB-Braunschweig
Gläser, Michael; 1.2, Festkörpermechanik, PTB-Braunschweig
Mecke, Michael; 1.1, Masse, PTB-Braunschweig
|
| Quelle/Jahr | 19th International Conference on Force, Mass and Torque, IMEKO TC 3: unrefereed full papers:(2005) |
| Availability | [CD-ROM] ; file name: 13.pdf |
| Herausgeber(in) |
Eltawil, Alaa eldin A.; National Institute of Standards (NIS), EGYPT
|
| URL | |
| Verlag | Giza: National Institute of Standards (NIS) |
| Konferenzangaben | IMEKO TC3, 19th International Conference, Cairo, 19-23, February, 2005, Egypt |
| Freie Schlagworte | www.imeko.org/publications/tc3-2005/IMEKO-TC3-2005-013u.pdf |
| Zusammenfassung | Spheres made of a silicon single crystal with a mass of about 1 kg are used as density standards and in the context of a project for the determination of the Avogadro constant. The status of the mass determination of such silicon spheres at the PTB is presented. Special facilities and procedures used for the mass determination in air are described. Results for a single sphere and the mass difference between two spheres are given with a discussion of the measurement uncertainty and mass stability. |
