| Autor: |
Ohishi, Tadanao, Seino, Shoichi, Sakurai, Yoshimasa |
| Zdroj: |
Applied Optics; April 1981, Vol. 20 Issue: 8 p1329-1332, 4p |
| Abstrakt: |
A vacuum-pipeless laser strainmeter has been designed, tested, and is described. The strainmeter has a compensator for the change of the refractive index of air which is determined by Edlén’s formula using measured values of atmospheric pressure and temperature. The effect of air-condition change was compensated by the compensator, and residual of the effect was less than ±5 × 10^−9 for 75 h. The strainmeter has successfully recorded solid tidal strains. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
