“After a large earthquake the earth "rings" like a bell; this motion can be observed on sensitive instruments up to a month after a large event. These oscillations have specific frequencies which are properties of the whole earth and which can be measured very accurately indeed. The lowest frequency oscillation has a period of about one hour. Any combination of seismic waves can be represented as an equivalent combination of normal modes. In practice the mode representation is most useful at low frequency — for seismic waves above about 40 s — since at higher frequencies the number of modes becomes prohibitively large.”

— David Gubbins

[Seismology and plate tectonics, 1990, http://books.google.com/books?id=tZRxPzwoChIC&pg=PA5] (p. 5)
Seismology and Plate Tectonics (1990)

Adopted from Wikiquote. Last update June 3, 2021. History

Help us to complete the source, original and additional information

Do you have more details about the quote "After a large earthquake the earth "rings" like a bell; this motion can be observed on sensitive instruments up to a mo…" by David Gubbins?

David Gubbins6

British university teacher 1947

David Gubbins (1947) British university teacher

[Seismology and plate tectonics, Cambridge, UK; New York, Cambridge University Press, 1990, http://books.google.com/books?id=tZRxPzwoChIC&pg=PA4] (pp. 4–5)
Seismology and Plate Tectonics (1990)

“A solid stores energy in the vibrations of the atoms about their equilibrium positions. In the simplest approximation, which Einstein considered, each atom vibrates with the same frequency, ν, in each of three dimensions, so a solid containing N atoms can be thought of as 3N one-dimensional simple harmonic oscillators.”

Jim Peebles (1935) Canadian-American astronomer

[Quantum Mechanics, 1992, Princeton University Press, 11, https://books.google.com/books?id=hTaw4Ht4Vi8C&pg=PA11]

“Indeed, the frequency of crashes in the Monte Carlo simulations was much smaller than the frequency of crashes in the real data: if one of the most frequently used benchmarks of the industry is incapable of reproducing the observed frequency of crashes, this indeed means that there is something to explain that may require new concepts and methods.”

Didier Sornette (1957) French scientist

Source: Why Stock Markets Crash - Critical Events in Complex Systems (2003), Chapter 9, Prediction Of Crashes And Antibubbles, p. 327.

“There's a major pattern of energy in universe wherein the very large events, earthquakes, and so forth, occur in any one area of universe very much less frequently than do the small energy events. Around the Earth insects occur more often than do earthquakes. In the patterning of total evolutionary events, there comes a time, once in a while, amongst the myriad of low energy events, when a large energy event transpires and is so disturbing that with their general adaptability lost, the ultra-specialized creatures perish.”

Buckminster Fuller (1895–1983) American architect, systems theorist, author, designer, inventor and futurist

1960s, Operating Manual for Spaceship Earth (1963)

“Nature is to us like an inﬁnite ballot-box, the contents of which are being continually drawn, ball after ball, and exhibited to us. Science is but the careful observation of the succession in which balls of various character present themselves; we register the combinations, notice those which seem to be excluded from occurrence, and from the proportional frequency of those which usually appear we infer the probable character of future drawings.”

William Stanley Jevons (1835–1882) English economist and logician

Source: The Principles of Science: A Treatise on Logic and Scientific Method (1874) Vol. 1, p. 169

“A sensitive may be one who possesses the telepathic transmitting or receiving ganglion in an advanced state of development, or who, by constant practice, is rendered more sensitive to these high-frequency waves.”

William Crookes (1832–1919) British chemist and physicist

Address to the Society for Psychical Research (1897)
Context: These rays, as generated in the vacuum tube, are not homogeneous, but consist of bundles of different wave-lengths, analogous to what would be differences of colour could we see them as light. Some pass easily through flesh, but are partially arrested by bone, while others pass with almost equal facility through bone and flesh.
It seems to me that in these rays we may have a possible mode of transmitting intelligence which, with a few reasonable postulates, may supply a key to much that is obscure in psychical research. Let it be assumed that these rays, or rays even of higher frequency, can pass into the brain and act on some nervous center there. Let it be conceived that the brain contains a center which uses these rays as the vocal chords use sound vibrations (both being under the command of intelligence), and sends them out, with the velocity of light, to impinge on the receiving ganglion of another brain. In this way some, at least, of the phenomena of telepathy, and the transmission of intelligence from one sensitive to another through long distances, seem to come into the domain of law and can be grasped. A sensitive may be one who possesses the telepathic transmitting or receiving ganglion in an advanced state of development, or who, by constant practice, is rendered more sensitive to these high-frequency waves. Experience seems to show that the receiving and the transmitting ganglions are not equally developed; one may be active, while the other, like the pineal eye in man, may be only vestigial. By such an hypothesis no physical laws are violated; neither is it necessary to invoke what is commonly called the supernatural.