Galitzin Vertical Component Seismometer and McComb-Romberg tilt compensation seismograph in: Coming to grips with the Earthquake Problem,” by Nicholas H. Heck, 1931. Journal of the Franklin Institute, Vol. 212, No. 3, pp. 269-303.
Photo Category: Geophysics Seismology
Photo Date: 1930 ca.
| 410 x 640 | 43.46 KB | |
| 819 x 1280 | 172.02 KB | |
| 1560 x 2440 | 1.01 MB |
| Added On | 16th October 2015 |
| Viewed | 13 viewed |