Supermassive Black Holes - Sixty Symbols
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Second of our Black Hole specials - this time it is supermassive black holes at the centres of galaxies. Featuring Michael Merrifield, Meghan Gray and Omar Almaini from the University of Nottingham. Playlist (and more to be added soon): http://bit.ly/Black_Hole_Videos Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/sixtysymbols This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Sixty Symbols videos by Brady Haran http://www.bradyharanblog.com Email list: http://eepurl.com/YdjL9
Comments
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So galaxies are just the secretion discs of black holes? Wow! It does make sense!
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So galaxies are just the secretion discs of black holes? Wow! It does make sense!
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the guy at 3:00 is a communist look at that poster
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You guys still didn't explain why light can't get out.,What is happening to space time in a black hole?
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I like this circle-based outro!
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... I'm hungry now ...
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Why is it believed that most galaxies have a super massive black hole in their centers?
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Can we have a video about this so called "dynamical friction" that was mentioned? I've always been confused how stuff spirals in if (as said later) things are supposed to stay in orbit. Is it just stuff crashing into one another? Is it similar to wind resistance, which we feel here on Earth?
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Go research "The Deep" at our center 'pole'.
There is a controlled (not necessarily black) hole, a massive stone crystal there.
And you know it, as is explained in 9:36 - 9.56. You have been looking at the center of our galaxy, which is called the 'North Pole'.
Either acted pseudo-science or ignorance is displayed here. -
0:32 Our Earth, a 'diabolo', an electric 'uni-verse' composition with a 'plain' of existence in the middle.
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You can't see into a black hole. You can see the results of the gravitational force of black holes which are all of the galaxies. So the reach or propagation of the force of gravity is virtually infinite. It could be a ring of matter orbiting the black hole but if nothing escapes, how is gravity escaping?
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"Artististic"
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Crazy cool! Thank you to all who made this video possible!
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black holes hold it all together, at a cost ofcourse, give me stars, more stars!
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7:30....'Angular momentum' statement......Minute Physics video teaches that angular momentum is conserved so can someone explain how it could be decreased in the scenario of a black hole?
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Ok, so a black hole/singularity is an Infinitely small infinitely dense point in space/time yes?
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I have a hypothesis:
I believe that supermassive black holes are vital for the formation of galaxies and exist because of the negative pressure effect of dark energy. By keeping the center of mass in the center of the galaxy and spinning, it causes the energy of the system to go up and cause more positive energy density to fight the negative pressure caused by dark energy. -
On earth we are like being in a grade school.
We look out of our fence at recess and look at the stuff happening miles away and try to make sense of it.
We see buildings and theorize that these buildings are huge classrooms like ours. Then we see roads and we thing that they are sidewalks that lead to other grade schools.
We cannot wrap our minds around other civilizations that are not built around conflict. We think that other extra-solar civilizations are just like ours - temporary, flawed and unstable. -
Would an unmanned craft with sufficient thrust be able to survey past the event horizon of a supermassive black hole, then escape afterward? A black hole so massive that the craft wouldn't experience extreme tidal forces at the event horizon.
On what kind of scale would the energy requirements for such a craft be?
10m 9sLenght
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