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from the we-thought-it-was-only-us-hearing-strange-noises dept.
According to Wired.co.uk, the source of the Earth's 'humming' noise may have been found:
A strange bell-like ring emitted by the Earth has left oceanographers confused for decades, but a new study may have found an explanation.
The low-frequency sound, which is inaudible to human ears but can be detected by seismic instruments, has frustrated scientists since the 90s. Theories suggested everything from electromagnetic radiation to earthquakes and secret military operations might be to blame. Although the sound is almost certainly too faint for humans to hear, some people claim to be plagued by a "tinnitus"-like noise -- including many residents of Bristol in the 70s, who said the sound caused headaches and even nosebleeds.
Link to research paper.[abstract only]
(Score: 5, Interesting) by MichaelDavidCrawford on Tuesday April 21 2015, @06:48AM
this was depicted on the cover of scientific american in 1983 or so. The sun has infinite modes of vibration. I expect they're countably infinite.
The whole sun gets bigger and smaller.
The equator shrinks and expands while the poles swell. Similarly for the other two of the 3-D axes.
It works just like a fourier decomposition. What we see when they're all added together is the violently turbulent solar atmosphere.
Yes I Have No Bananas. [gofundme.com]