Virtual Museum | Geoscience Center | SEG | Student Connection | Ask a Geophysicist! | Donate  instruments | What's new? | Site Map

Search for

[Advanced Search]


Biographies of geophysicists that have lead the way in exploration geophysics
 Listing of awards from SEG and their recipients
 A gallery of past presidents of SEG
 Items on display in the Virtual Museum
 Electrical prospecting instruments and technology
 Gravity prospecting instruments and technology
 Magnetic prospecting instruments and technology
 Seismic prospecting instruments and technology
 General interest items displaying geophysical methods and technology
 Exhibits of geophysical methods
 About Us
 Contact us

Did you know?

Sally Zinke becomes the first woman to hold the office of SEG President in 2000.


Instruments \ Seismic \ Seismometers \ 

Name:

Ewing/Press Horizontal Earthquake Seismometer

Date:

1960

Item Number:

87.21.63

Donor:

Lamont-Doherty

Type:

N/A

 

Manufacturer:

 

 

Unknown

Description:
Base 60.5 cm L, 35.5 cm W. Post 42.0 cm H; has horizontal boom hinged near post. Weight is on opposite end of boom and is supported by diagonal wire. A coil of wire is attached to weight and permanent magnet is secured to base plate. Motion provides electric charge.

#63 EWING PRESS HORIZONTAL SEISMOMETER - About 1952

It is a horizontal boom whilch is hinged near the post at the bottom and the weight is supported by a diagonal wire attached to the top mechanism. The adjustment on the top wire places the boom in the appropriate vertical sense and in the horizontal sense so that the hinge points are at the desired location. A coil of wire is attached to the mast of the boom and a permanent magnet is mounted on the base plate that surrounds the coil of wire so that whenever the boom moves a signal is generated in the electric wire, and this can be transmitted to drum recorders so that the drum recorder can record the earthquake waves.




 

The SEG Virtual Museum is hosted by
Missouri Southern State University - Joplin, Missouri
--A comprehensive state university for the 21st Century,
emphasizing an international perspective to education		 Last Updated: 2/9/2006
 SEG Foundation
Disclaimer
This web page and accompanying pages are not maintained by the SEG Business Office staff nor by Missouri Southern State University. SEG nor MSSU do not necessarily endorse or concur with representations made on these pages and have no responsibility for the content. Comments and concerns should be referred to the webmaster, John Knapp, member of SEG Geoscience Center Committee.