The Naked Scientists

The Naked Scientists Forum

Author Topic: what's the difference between worm hole and black hole??  (Read 4963 times)

Offline harcarmen

  • First timers
  • *
  • Posts: 1
    • View Profile
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!!!!!!!!!


 

Offline imatfaal

  • Neilep Level Member
  • ******
  • Posts: 2787
  • rouge moderator
    • View Profile
Re: what's the difference between worm hole and black hole??
« Reply #1 on: 08/02/2013 16:45:09 »
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. 
 

Offline Pmb

  • Neilep Level Member
  • ******
  • Posts: 1838
  • Physicist
    • View Profile
    • New England Science Constortium
Re: what's the difference between worm hole and black hole??
« Reply #2 on: 09/02/2013 03:06:28 »
Quote from: imatfaal
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 Ö.
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 Iím not sure.

 
Quote from: imatfaal
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 Iím not sure what it is. You can learn about it here --- http://en.wikipedia.org/wiki/Wormhole#Schwarzschild_wormholes
 

The Naked Scientists Forum

Re: what's the difference between worm hole and black hole??
« Reply #2 on: 09/02/2013 03:06:28 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums