Previous in Forum: Glowing Cable   Next in Forum: New Way to Multiply Large Numbers
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
21 comments
Rating: Comments: Nested
Rixter
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9910
Good Answers: 1141

Image of Black Hole

04/10/2019 12:23 PM

Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#1

Re: Image of Black Hole

04/10/2019 12:25 PM

That might be where some of CR4's former posters have gone...

__________________
 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
SolarEagle
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33392
Good Answers: 1817
#2

Re: Image of Black Hole

04/10/2019 12:40 PM

Reminds me of the introduction to some movies that say "This movie is based on actual events" ....An actual picture would be rather difficult to manage...

__________________
 All living things seek to control their own destiny....this is the purpose of life
Register to Reply
Rixter
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9910
Good Answers: 1141
#3

Re: Image of Black Hole

04/10/2019 1:03 PM

It probably should be called a silhouette of a black hole...
Register to Reply
redfred
Guru
Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 15601
Good Answers: 981
#4

Re: Image of Black Hole

04/10/2019 1:52 PM

I like this BBC report on the image. What I found to be particularly amusing is the almost ludicrous volume of raw data was sneakernet transferred from around the world using hundreds of hard drives.

__________________
 "Don't disturb my circles." translation of Archimedes last words
Register to Reply
redfred
Guru
Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 15601
Good Answers: 981
#5

Re: Image of Black Hole

04/10/2019 3:09 PM

As usual, Randall Munroe's xkcd comic adds a good perspective on a science news story.

__________________
 "Don't disturb my circles." translation of Archimedes last words
Register to Reply Score 1 for Good Answer
No more "Almost" Good Answers.
MR. Guest
Guru
Engineering Fields - Civil Engineering - Member

Join Date: Mar 2011
Location: ''but, don't we get PAID to ask questions?...''
Posts: 1661
Good Answers: 17
#8
In reply to #5

Re: Image of Black Hole

04/11/2019 12:36 PM

Qualitatively speaking, doesn't it seem like the (surface) of the black hole should be more consistantly (smooth) and less (lumpy)?...

__________________
 ''illigitimi non carborundum...''(i.e.: don't let the fatherless (self-deluding,sabotaging, long-term-memory-impaired, knee-jerking, cheap-shotting, mono-syllabic, self-annointed, shadow-lurking, back-biting, off-topic-inquisitors) grind you down...)
Register to Reply
artsmith
Guru
Hobbies - CNC - New Member Popular Science - Biology - New Member Hobbies - Musician - New Member

Join Date: Dec 2008
Location: Canada
Posts: 3523
Good Answers: 146
#6

Re: Image of Black Hole

04/10/2019 3:51 PM

Nice explanation of interferometry. I was surprised that it took only a couple of days to collect enough data (I mean... so much data!)

__________________
 incus opella
Register to Reply
MikeMack747
Power-User

Join Date: Jan 2010
Location: Dayton Ohio
Posts: 265
Good Answers: 10
#7

Re: Image of Black Hole

04/11/2019 10:34 AM

Here's a picture of my black hole...

2009 Mini Cooper on it's 3rd timing chain and 1 piston replaced

Like a Cavalier with a turbo

__________________
 MikeMack747
Register to Reply Score 1 for Good Answer
Go to Next "Almost" Good Answer
IQ
Guru

Join Date: Feb 2013
Posts: 2004
Good Answers: 31
#14
In reply to #7

Re: Image of Black Hole

04/13/2019 2:06 PM

And how many turbos to date have you gone through?
Register to Reply Off Topic (Score 5)
IQ
Guru

Join Date: Feb 2013
Posts: 2004
Good Answers: 31
#9

Re: Image of Black Hole

04/11/2019 1:25 PM

Oh come on, its a hoax, a witch hunt, fake news. We have been told black holes gobble up everything including light. Olbers paradox shows us that space is dark, (its even more darker at night). So why do they wish us to believe this photo-shopped video, showing the lights are on in the black hole.

They are misleading us, all smoke and mirrors. I suggest this is simply darkness that has accumulated on the space station window, (because the cleaning lady did not get out last week to clean the windows), and the light is flash from the iPhone camera making it look sort of like a hole.

Nice try Nasa. I am on to you!

Register to Reply Off Topic (Score 6)
Rixter
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9910
Good Answers: 1141
#10

Re: Image of Black Hole

04/12/2019 6:07 PM

Here's a description of the CHIRP algorithm used to image the black hole from sparse interferometric data.

https://www.youtube.com/watch?v=YgB6o_d4tL8
Register to Reply
IQ
Guru

Join Date: Feb 2013
Posts: 2004
Good Answers: 31
#11
In reply to #10

Re: Image of Black Hole

04/13/2019 8:56 AM

It's a conspiracy I tell thee. A ruse. To divert us from Brexit. Donald wants the UK as a golf course.

But I do have time for a nice cup of tea and a jam doughnut.

NB: doughnut is a ball shape, dough ring has a hole, and one should never eat or swallow the hole. It is a chocking hazard.
Register to Reply Off Topic (Score 5)
artsmith
Guru
Hobbies - CNC - New Member Popular Science - Biology - New Member Hobbies - Musician - New Member

Join Date: Dec 2008
Location: Canada
Posts: 3523
Good Answers: 146
#19
In reply to #10

Re: Image of Black Hole

04/13/2019 4:34 PM

Interesting how they trained the machine on different types of images to tweak it and evaluate the output image. I would say the black hole got a fair representation by the method used, but of course someone will laugh at that some number of years down the road, when we find out what we missed.

__________________
 incus opella
Register to Reply
munch
Power-User

Join Date: Mar 2010
Location: The Canyons of the Ancients
Posts: 356
Good Answers: 2
#12

Re: Image of Black Hole

04/13/2019 1:21 PM

Have they , can they, figure out how incredibly fast this vortex is spinning?

__________________
 " looking for conscience in the brain is like looking for the band in the radio" N. H.
Register to Reply
Anonymous Poster #1
#13
In reply to #12

Re: Image of Black Hole

04/13/2019 1:59 PM

120mph with gusts up to 320mph.
Register to Reply
redfred
Guru
Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 15601
Good Answers: 981
#15
In reply to #13

Re: Image of Black Hole

04/13/2019 2:08 PM

You have the wrong units for angular velocity.

__________________
 "Don't disturb my circles." translation of Archimedes last words
Register to Reply
IQ
Guru

Join Date: Feb 2013
Posts: 2004
Good Answers: 31
#16
In reply to #15

Re: Image of Black Hole

04/13/2019 2:16 PM

Ah Ha! My dear Watson, these are IKEA units.
Register to Reply
redfred
Guru
Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 15601
Good Answers: 981
#17
In reply to #16

Re: Image of Black Hole

04/13/2019 3:10 PM

Not enough vowels or diacritical marks for IKEA units.

__________________
 "Don't disturb my circles." translation of Archimedes last words
Register to Reply Off Topic (Score 5)
IQ
Guru

Join Date: Feb 2013
Posts: 2004
Good Answers: 31
#18
In reply to #17

Re: Image of Black Hole

04/13/2019 3:37 PM

Out of stock on diacritical marks, they threw in some dirty marks instead. As a bonus and to appease, I have added some virama for your pleasure

( ् ് ్ ් ್ )

ā, ē, ī, ū, č, ģ, ķ, ļ, ņ, š, ž Imported these from Latvia

Please enjoy. Use with caution.

Register to Reply Off Topic (Score 5)
FilthyRF
Participant

Join Date: May 2019
Posts: 2
#20

Re: Image of Black Hole

05/08/2019 7:46 AM

Awesome! A big step in studying black holes
Register to Reply
FlyingAO
Participant

Join Date: May 2019
Posts: 3
#21
In reply to #20

Re: Image of Black Hole

05/13/2019 5:11 AM

Yes, you are right. But I've expected the photo to be more detailed
Register to Reply
Register to Reply
Have a Different Question?
21 comments

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
Copy to Clipboard

Users who posted comments:

Anonymous Poster (1); artsmith (2); FilthyRF (1); FlyingAO (1); IQ (5); MikeMack747 (1); MR. Guest (1); munch (1); PWSlack (1); redfred (4); Rixter (2); SolarEagle (1)

Previous in Forum: Glowing Cable   Next in Forum: New Way to Multiply Large Numbers

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
General Discussion:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (65 right now)
Show Members
Advertisement