The NMIJ/AIST is responsible for establishing and disseminating measurement
standards in Japan. The measurement standards include force, pressure,
and torque standards. In order to realize these mechanical standards,
weight force is utilized. Therefore it is necessary for us to determine
the local gravitational acceleration at a calibration room. Figure
shows an example of gravity data using the FG5 absolute gravimeter.
The periodical change in gravity due to tides is clearly observed.
The NMIJ/AIST participated in the International Comparison of Absolute
Gravimeters in 2001 held at the BIPM. As a result, international consistency
in gravimetry is ensured among the participating laboratories.
|
 |
| An
example of the result of gravity observation. |
|
| Relational Information |
|
|
AIST Today Vol. 3, No. 2 (2002) 18
|
No.8
Spring 2003
back
> 
