|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
26 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
A determination of the local acceleration of gravity for the NIST-4 watt balance | | E.J. Leaman
; D. Haddad
; F. Seifert
; L.S. Chao
; A. Cao
; J.R. Pratt
; S. Schlamminger
; D.B. Newell
; | | Date: |
12 Dec 2014 | | Abstract: | A new watt balance is being constructed at the National Institute of
Standards and Technology (NIST) in preparation for the redefinition of the
International System of Units and the realization of mass through an exact
value of the Planck constant. The total relative uncertainty goal for this
instrument of a few parts in $10^{8}$ requires that the local acceleration due
to gravity be known at the location of a test mass with a relative uncertainty
on the order of only a few parts in $10^{9}$. To make this determination, both
the horizontal and vertical gradients of gravity must be known such that
gravity may be tied from an absolute reference in the laboratory to the precise
mass location. We describe the procedures used to model and measure gravity
variations throughout the laboratory and give our results. | | Source: | arXiv, 1412.4143 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER