from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A detecting device that receives seismic impulses.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A device used by seismologists to detect and measure seismic waves and therefore locate earthquakes etc; a seismograph
from the GNU version of the Collaborative International Dictionary of English
- n. An instrument for measuring the direction, duration, and force of earthquakes and like concussions.
from The Century Dictionary and Cyclopedia
- n. An instrument by the aid of which the data are obtained for the scientific study of earthquake phenomena.
- n. In technical usage, the tendency is to restrict the application of the term “seismometer” to instruments of such high character that from the records or indications they give the actual motion of the ground may be inferred or worked out. Many instruments are sensitive to the vibrations of the ground, but their indications or records are very far from being exact measures of the disturbing influences. The Bosch-Omori and the Marvin seismographs while not absolutely perfect are scismometers, but, at the same time, they are seismographs, simply because they produce written records. The use of the term “seismo-scope” is restricted to instruments that simply indicate the existence of seismic influences, without either measuring or recoding them.
Sorry, no etymologies found.
Perhaps the most sensitive seismometer recording this religious temblor was provided by the American people themselves.
El chiguire bipolar [es] (The bipolar capybara), a very popular blog based on humour and politics, published this picture of Francisco Garces, the spokesman of the FUNVISIS saying, “Garces admits he has not learned yet how to handle the new seismometer”
Seahawks fans were jumping up and down so much during a pivotal play in their upset victory over the New Orleans Saints this weekend that it registered as a small earthquake on a seismometer 100 yards from the stadium, The Seattle Times reports.
That fracturing process produces micro-earthquakes, small tremors that can be detected with a seismometer but generally aren't felt at the Earth's surface.
The best ones, traditionally, are light and handy and chambered for cartridges that do not cause seismometer needles to jump when you pull the trigger.
He saw to some photographs, the core samples, rock collecting and setting up the seismometer, the ultra violet ray collector, the flag, among many other tasks.
The energy of the impact created small tremors that were measured by the seismometer placed on the Moon by Apollo 12 astronauts in 1969.
Ranger IV was also equipped with a seismometer and radio transmitter, designed to be released in a small capsule from the rocket before impact and land on the Moon in sufficiently good condition to measure the frequency of natural earthquakes in the body of the Moon.
Above: Buzz Aldrin with a seismometer on the lunar surface.
A seismometer placed in 1969 by Apollo 12 astronauts recorded the vibrations, which lasted for about three hours.
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