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16 Oct 17
22:36
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25 Jun 06
Did anyone else just see that awful "science" piece on the BBC news? Where the science editor, who you would presume got the job by not being a total idiot, played back a plopping noise and said that this was the "actual sound" of two neutron stars colliding .. like 100 million light years away. ACTUAL SOUND! So we've now "space microphones" that can hear sound across light years of vacuum then?
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Gravity waves are distortions of space-time, and not sounds per se, but luckily these vibration resonate at audible frequencies. So, by converting the measurements to soundwaves, LIGO scientists can “listen” to the universe. This most recent observation is far longer than any previously observed gravitational event making for some interesting ear candy.
https://qz.com/1103444/ligo-listen-to-a-kilonova-the-sound-of-two-stars-colliding-in-space/ |
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It's not the "actual sound" though is it. It's a translated analogue of a totally different physical property into audio that happens to be useful for one of our senses.
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If you travel far enough out into the universe you could hear Shakespeare speak, a little further you would hear Jesus, you could hear what you said yourself on your first day at school .
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i sometimes think that the sound and vision will bounce off some object in space and return.
maybe spoken word will be lost in the vacuum, but we could learn to lip read |
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sound can travel across deep time, a cycle of one oscillation every 10 million years.
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Prof Stephen Hawking of Cambridge University told BBC News that this was
"the first rung of a ladder" for a new method of measuring distances in the Universe. "A new observational window on the Universe typically leads to surprises that cannot yet be foreseen. We are still rubbing our eyes, or rather ears, as we have just woken up to the sound of gravitational waves," he said. of course he didnt actually say that but by selecting options with his eyeball his thoughts were converted to sound by a computer |
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that's how it is possible to hear the sound of the early universe. It is the same as a star that is no longer there , but we can see it.
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They just outdid this one, they are discussing charging more for some cars in London, and the annoying tw-t who is their transport guy just said cars emit "nitrogen dioxide and tiny particles only visible if you use a special camera" - and then they show footage taken by an IR temperature camera with a car exhaust showing red .. err... as it's hot. "Tiny particles"? Surely even someone who scraped a pass in GCSE Science should understand the difference between particles and Infrared?
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It's NASA photos that get me ......... From a far away planet the earth is the size of a pin head, yet a satellite can take a picture, turn around, shoot the jpeg back toward where Earth is spinning at 60,000 mph, it dodges every piece of space debris, asteroid, cosmic radiation etc,etc and pops out of a printer at NASA as clear as day........FFS give us a break.
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