 Let's see your SVS do this...
|
Joined: May 2003
Posts: 973
aficionado
|
OP
aficionado
Joined: May 2003
Posts: 973 |
thought this was kind of humorous
http://www.cbc.ca/stories/2003/09/09/black_hole030909
from the good ole boys at the canadian broadcasting corporation
"Chickens don't clap."
|
|
|
Re: Let's see your SVS do this...
|
Joined: May 2003
Posts: 18,044
shareholder in the making
|
|
shareholder in the making
Joined: May 2003
Posts: 18,044 |
Uh, hate to ask the obvious, but how does sound travel in space?
I am the Doctor, and THIS... is my SPOON!
|
|
|
Re: Let's see your SVS do this...
|
Joined: Feb 2003
Posts: 1,490
connoisseur
|
|
connoisseur
Joined: Feb 2003
Posts: 1,490 |
The link doesn't seem to work... 
|
|
|
Re: Let's see your SVS do this...
|
Joined: Apr 2003
Posts: 16,441
shareholder in the making
|
|
shareholder in the making
Joined: Apr 2003
Posts: 16,441 |
Here's the fixed link:
http://www.cbc.ca/stories/2003/09/09/black_hole030909
Hmmm. Infrasound has been blamed for causing anxiety and feelings of paranoia. Maybe this thing is to blame for all humanity's problems???
|
|
|
Re: Let's see your SVS do this...
|
Joined: Oct 2002
Posts: 1,041
connoisseur
|
|
connoisseur
Joined: Oct 2002
Posts: 1,041 |
Sound is a vibration of some medium, like air. Vacuum or emptiness has a density of zero — thus no sound.
But a black hole has high density thus possible sound. My guess. Lets ask the scientists....
|
|
|
Re: Let's see your SVS do this...
|
Joined: Feb 2003
Posts: 1,490
connoisseur
|
|
connoisseur
Joined: Feb 2003
Posts: 1,490 |
Although I do science as my day job, I know astrophysics no better than you guys. That said, here are my $0.02 reading the news article:
(1) They are talking about a sound wave at frequencies in the order of 0.000000000000001 Hz (10^-15 Hz) -- if you still call it a "sound" wave. In other words, the cycle period of this sound is ~10 million years.
(2) The "medium" for this sound wave is apparently the plasma gas jetting out from a black hole.
(3) This far-subsonic sound wave has never actually reached the earth. Instead, they indirectly observed the existence of sound wave by observing a modulation of X-ray and other radiations shooting toward us from the plasma jets surrounding the black hole.
(4) I don't think any subwoofer lasts one cycle period of this sound. 
|
|
|
Re: Let's see your SVS do this...
|
Joined: Apr 2003
Posts: 16,441
shareholder in the making
|
|
shareholder in the making
Joined: Apr 2003
Posts: 16,441 |
That conclusion makes sense to me. Thanks sushi.
Analogous to that, I suppose special equipment located on an orbiting Space Shuttle would be able to detect certain sound waves down on Earth even though it would be completely inaudible in space.
|
|
|
Re: Let's see your SVS do this...
|
Joined: May 2003
Posts: 18,044
shareholder in the making
|
|
shareholder in the making
Joined: May 2003
Posts: 18,044 |
I am just questioning the term "sound" when related to this. I suppose it could be called that, but it just seems like oscillation in the plasma stream to me.
Damn, does this sound like Star Trek technobabble to anyone else?
I am the Doctor, and THIS... is my SPOON!
|
|
|
Re: Let's see your SVS do this...
|
Joined: May 2002
Posts: 10,654
shareholder in the making
|
|
shareholder in the making
Joined: May 2002
Posts: 10,654 |
Does a black hole make a sound if there's nobody living there to hear it?
-----------------------------------
Enjoy the music, not the equipment.
|
|
|
Re: Let's see your SVS do this...
|
Joined: Oct 2002
Posts: 1,041
connoisseur
|
|
connoisseur
Joined: Oct 2002
Posts: 1,041 |
|
|
|
|
Forums16
Topics24,943
Posts442,465
Members15,617
| |
Most Online2,082
Jan 22nd, 2020
|
|
|
1 members (BBIBH),
580
guests, and
4
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
|
