Slashdot Mirror

← Back to Stories (view on slashdot.org)

Earth's Constant Hum Explained

Posted by CowboyNeal on from the global-tinnitus dept.

MattSparkes writes "It has been known for some time that there is a constant hum that emanates from the Earth, which can be heard near 10 millihertz on a seismometer. The problem was that nobody knew what caused it. It has now been shown that it is caused by waves on the bottom of the sea, and more specifically 'by the combination of two waves of the same frequency travelling in opposite directions.'"

1 of 336 comments (clear)

  1. Re:10 millihertz by FormOfActionBanana · · Score: 5, Informative

    Actually, I think it works out to about 36 waves per hour.

    10 milliHertz = 10 * 1/1000 waves per second
    => 0.01 waves per second
    * 60 => 0.6 waves per minute
    * 60 => 36 waves per hour

    --
    Take off every 'sig' !!