At TED2011, Physicist Janna Levin spoke about the sound of black holes:
Black holes can bang on space…like mallets on a drum, and they have a very characteristic song.
Black holes can be heard if not seen.
These black holes will ring in a frequency that your ears can hear. You head would be squeezed and stretched [so you might have difficulty hearing them.]
Imagine a lighter black hole falling into a heavy black hole…We can predict what that sound will be…We know that as it [the smaller black hole] falls in [to another black hole] it gets faster and louder and eventually we will hear the little guy fall into the bigger guy. [Levin plays a recording that vaguely resembles a heart beat, which then speeds up to what sounds like a basketball dribbling on a court. Levin notes it “chirps up at the end”].
Has the pixel to print tipping point been reached? Last July we reported that Amazon’s Kindle eReader books had surpassed hardcover books in terms of sales, selling 143 Kindle books for every 100 hardcover books. Now that lead also holds for paperbacks as well with 115 Kindle books being sold for every hundred paperbacks.
I really wonder about people who seriously think that we’re going to have tangible paper books in the long term.