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Black hole hums deepest note ever detected
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Ben Bradley
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Black hole hums deepest note ever detected
In rec.audio.pro,
(Scott Dorsey) wrote:
...
So, we are talking 0.0000000000000192 Hz here. Or something with a period
of 986 million years. (I love my HP34C calculator.) That is a very low
note.
Well if black holes where matter ends is a Bb, may where matter enters the
Universe produces an F note. Five - One resolution and such.
According to NPR, this is a genuine pressure wave, like actual audio. Given
how sparse the molecules are in interstellar space (which is almost a perfect
vacuum), I can understand how the rate of propagation would be really really
low.
I heard the NPR story, I thought the single note being played was
very instructive.
This reminds me of the tree-falling-in-the-forest question: Is
there a species out in space that's long-lived enough and with hearing
that goes low enough to hear this 'tone'?
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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Black hole hums deepest note ever detected