THE NEW WATT BALANCE EXPERIMENT AT METAS |
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| H. Baumann, A. Eichenberger, B. Jeckelmann, Ch. Beguin, R. Clavel, F. Cosandier, D. Reber, D. Tommasini |
- Abstract:
- The kilogram is the last unit of the international system (SI) still based on a material artifact, the international prototype of the kilogram (IPK). The comparisons made in the last hundred years have clearly revealed a long term relative drift between the IPK and a set of copies kept under similar conditions. Since the long term stability is one of the major conditions set on the SI base units, this situation is no longer satisfactory and a new definition of the mass unit becomes a priority for the metrology community. A promising route towards a new definition based on fundamental constants is given by the watt balance experiment which links the mass unit to the Plank constant h.
- Keywords:
- kilogram, Planck constant h, system of units, watt balance
- Download:
- IMEKO-WC-2012-TC7-O11.pdf
- DOI:
- -
- Event details
- Event name:
- XX IMEKO World Congress
- Title:
Metrology for Green Growth
- Place:
- Busan, REPUBLIC of KOREA
- Time:
- 09 September 2012 - 12 September 2012