The seismograph pens, which had been tracing steady parallel lines on the paper, began tracing jagged lines instead.
Those vibrations will bounce back to the line of geophones and be relayed to the seismograph here.
Well, I'm not throwing my seismograph away for a while yet," Tom retorted.
This seismograph measures changes of one millionth of an inch in the position of the earth's surface.
Besides this very sensitive photographic seismograph Professor Milne has a simpler machine, not covered up and without lamp or mirror.
In brief, the central feature of the seismograph is a very finely poised pendulum, which is jarred by the slightest disturbance of the earth, the end of it being so arranged that a photograph is taken of every quiver.
Succeeding the first repetition of motion recorded by the seismograph there is often a rhythmical repetition of similar wave groups, suggesting the existence within our earth of phenomena akin to multiple echoes.
As shown by recording instruments at the seismograph station at Washington, D.
The seismograph of to-day, however, has reached a stage of perfection where close approximations are obtained in the records made.
The seismograph in the government observatory at Washington showed that the first wave, on April 18th, came at 8.
From far away New Zealand, on the same date, the governmentseismograph at the capital, Wellington, recorded seismic waves that apparently passed round the earth five times at intervals of about four hours each.
No, the record of the ghost on the seismograph was not Mr. Farrington's, as I implied at the moment when you so kindly furnished this additional proof of your guilt by trying to destroy the evidence.
I think you must all appreciate that your tiptoeing up the hall must cause a far greater disturbance in this delicate seismograph than even a very severe earthquake thousands of miles away, which it was built to record.
Hence the tiny fluctuations of Hilary Vane's seismograph an instrument, as will be shown, utterly out-of-date.
That seismograph of the Honourable Hilary's persisted in tracing only a slightly ragged line throughout the beautiful month of May, in which favourable season the campaign of the Honourable Adam B.
A record of the shock was also given by a Cecchi seismograph at Perpignan in France, but the distance from the epicentre was too great to allow details to be shown.
The pointer of the recording seismograph is here supposed to oscillate along a line at right angles to AB, and the smoked paper or glass on which the record is made to travel to the left.
The Moncalieri instrument was erected before the modern type of seismograph was designed, in which some part remains steady, or very nearly steady, during the complicated movements of the ground that take place in an earthquake.
The most valuable record was that obtained from a Cecchi seismograph at the observatory of Moncalieri, near Turin, about ninety miles north of the principal epicentre.
The seismograph at the university of this city registered two small shocks, the first at 9.
They were not simply swinging, for the period of the undulations differed from that of the seismograph when set swinging, and also varied in successive undulations.
It was ascertained afterwards, by measurement with a level, that to produce these deflections, the seismograph must have been tilted through an angle of about one-third of a degree.
The velocity of the falling object, as reported from two radar installations, checked against a seismograph record of the time of the impact in the lake and allowed no leeway of time for it to hover in mid-air to be admired.
The following brief account of his seismograph will, therefore, form a not unsuitable complement to his Memoir.
The arrangement of Daniell's battery used for the seismograph is shown in Fig.
When the seismograph has been arranged according to such directions, no matter from what part the first horizontal shock comes, one of the four pendulums will be set in motion.
Other government stations throughout the country also noted the earthquake shock, and they agree in a general way that the disturbance began according to the record of the seismograph at nineteen minutes and twenty seconds after 8 o'clock.
This is my seismograph which tells me whether I have had any visitors in my absence.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "seismograph" in a variety of sentences. We hope that you will now be able to make sentences using this word.
