Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: harcarmen on 08/02/2013 03:05:31
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Hi! I am Carmen. Since i heard of worm hole and black hole, i am quite confused about these two terms. I want to know more about the difference between worm hole and black hole. Thanks!!!!!!!!!
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Black hole are strongly established in theory, and beginning to be well shown in observation. They are a collapsed star in which the gravity is so high that they have imploded in on themselves and shrunk to an impossibly small size but retained all its mass - the gravitational attraction is so high that there is a place around them from which not even light can escape (we call this the event horizon).
This fact that not even light escapes means they are black - hence the name, but it also means we cannot focus our telescopes directly at them (we see nothing). But we do have pretty substantial indirect evidence of the existence of black holes at the centre of the spiral galaxy - and have measured their effects to good precision in these nearby galaxies. By the way - because of the fact that no light can escape the event horizon we have no way of ever looking beyond the event horizon and all our physical models are in real trouble at the centre of the black hole (the possible singularity)
a wormhole is a highly speculative and hypothetical cosmological potential phenomenon - it is where strange and undiscovered "exotic matter" has acted in such a way as to open a shortcut between two sections of normal space.
they are often spoken of in the same breath as one of the sources of the exotic matter and energy required to open a worm hole could be connected with the mysterious happenings inside the event horizon of a black hole and at the singularity.
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Black hole are strongly established in theory, and beginning to be well shown in observation. They are a collapsed star in which the gravity is so high that they have imploded in on themselves ….
That is one of the ways in which black holes can form, i.e. stellar implosion. Another way is when two stars pass by each other their gravitational forces swing them around each other and then fling them off into different directions from their original paths. Typically one of the stars gets flung towards the center of the galaxy. Eventually this builds up the galactic core into a gigantic black hole. There are also primordial black holes which are objects formed during the universes early expansion when the matter density was extremely high. Micro black holes are an example of such black holes. In fact they might be the same thing but I’m not sure.
a wormhole is a highly speculative and hypothetical cosmological potential phenomenon - it is where strange and undiscovered "exotic matter" has acted in such a way as to open a shortcut between two sections of normal space.
they are often spoken of in the same breath as one of the sources of the exotic matter and energy required to open a worm hole could be connected with the mysterious happenings inside the event horizon of a black hole and at the singularity.
There is a relationship between the spacetime of a black hole and the spacetime of certain kinds of wormholes known as Schwarzchild Wormholes but I’m not sure what it is. You can learn about it here --- http://en.wikipedia.org/wiki/Wormhole#Schwarzschild_wormholes
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.........Black Hole vs Wormhole .
A black-hole is protected by solid theoretical physics . A wormhole is protected by magic ( gray-zone fudge factors ) .
For understandable banter about black-holes , go to "Are BlackHoles really holes ?" or "Are Black Holes stars or holes ?" .
For understandable banter about wormholes , Bing up "Alice in Wonderland ." .
....P.M.
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My definition regarding blackhole and wormhole is like this:
Blackhole = A hole in space which sucks everything close by and squeezes them inside.
Wormhole = A hole which will teleport you somewhere else once you enter.
Maybe you can watch the first episode of Power Rangers Super Ninja Steel to comprehend the difference easier. At the last episode of Power Rangers Dino Super Charge, Sledge was pulled to a blackhole in an attempt to crush him but then it turned out to be a wormhole which teleported him to another dimension (the main Power Rangers dimension) instead.
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Best to read these replies:
https://www.thenakedscientists.com/forum/index.php?PHPSESSID=7mb2rrnqadhkjentqpd4fu6r22&topic=46881.msg404696#msg404696
https://www.thenakedscientists.com/forum/index.php?PHPSESSID=7mb2rrnqadhkjentqpd4fu6r22&topic=46881.msg404716#msg404716
But in summary, blackholes are areas of intense gravitational atraction and are known to exist.
Wormholes are like woodworm digging a hole from top surface of a tabletop to the bottom surface, creating a shortcut from one side to the other. It is very unlikely that they exist, except in the extreme conditions of a blackhole, and even then unlikely.
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Worm holes are very theoretical entities, close to science fiction. Black Holes, or some equivalent, is found to exist by indirect astronomical observations of the way light and mass 'distort' their paths in the vicinity of them. If I remember right you need 'exotic materials' to hold a wormhole stable, which is the same as asking for unobtanium, a infinitely rigid material that will hold even in a black hole.
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A wormhole is a Einstein Rosen bridge, and is completely theoretical, it might as suggested above not exist, however the ER = EPR conjecture does exist. https://en.wikipedia.org/wiki/ER%3DEPR . The ER theory was formulated about one month after the EPR theory, to explain entanglement. Entanglement does happen in nature and might be proof of wormholes, that can transmit qubits of information between different points in space considerably in excess of c.
Edit an ER bridge(wormhole) between two blackholes(lots of mass) may be a bigger version of an EPR bridge(wormhole) between two particles (with mass) or photons(with no mass).
No body believed in blackholes until they were discovered. Wormholes are one of the theories Einstein was involved with, only a fool would discard what Einstein says as pure fiction without sound reasons to do so.
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Even though both black hole and wormhole are consistent in theory, we surely know that black hole exists and we also got an image recently but we don't know whether wormholes exist in reality or not. One more distinguishing factor between black holes and wormholes is the Hawking radiation. Black holes lose energy through Hawking radiation whereas wormholes don't do that. Another difference is the Event horizon, a black hole has an Event horizon whereas wormhole doesn't have anything like that.
I hope this helps.
--via ScienceHook
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...so then...
If I plunge into a naked wormhole , I will be ejected from the other end as a spray of GUT.-matter ?
P.
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Thanks for your valuable reply.well done :)
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Thanks for your valuable reply.well done :)
Thank you for your weak attempt to spam us.
We’ve changed your spam link and are pushing you up your own private wormhole.
Bye
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Sounds painful.