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Loading...Probably one of the most prevalent myths regarding black holes is that they are black. In fact scientist’s have no idea what color they are. They only assume they are black because according to theory the gravitational forces associated with their mass are so large that light cannot escape or be emitted from them.
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However, calling them black is somewhat analogous to calling a light bulb that is turned off black because it is not emitting any light.
Another myth about Black Holes is that they are holes in a space-time metric. But the volume of a hole by definition cannot be made up of the medium in which it resides. For example, the volume of a hole in sand cannot contain sand. Additionally one can always fill in that hole and make it smaller by pouring sand in it.
But according to theory, a Black Hole’s mass is made up of space-time metric while the sounding volume is made up of the same “material”
However when you add mass to a Black Hole it gets bigger.
But, as mentioned earlier observations of our environment tell us that a hole gets smaller not bigger if we add the material that surrounds it to it.
Another words, why do we call them holes when adding the sounding material causes them to getting bigger not smaller.
But one of the more mysterious or non-common sense aspects of a Black Hole is how is it possible for an object with a volume bigger than our sun to collapse one-dimensional point or a singularity as physicists like to call it.
In 1915, Karl Schwarzschild discovered that according to Einstein’s General Theory of Relativity the gravitational field of a star greater than approximately 2.0 times a solar mass would cause the matter contained in it to collapse to singularity or a one-dimensional point in space it after it has used up its nuclear fuel.
This conclusion is based on the fact that the strength of a stars gravitational field increases as it collapses. Therefore, at a certain point in time the contraction of that star will produce a gravitational field whose energy is strong enough to cause the complete collapse of the matter in that star. In other words, the energy of its gravitational field becomes stronger than energy that gives atoms and their components, the protons, neutrons and electrons their volume causing them to collapse to a one-dimensional point in space.
Additionally physicists tell us the properties and laws that govern the environment of a singularity are "mysteriously" hidden are form our view because according to them the laws of physics cannot be applied to it.
However, this assumes that gravitational forces is the only thing that controls the volume of the universe and the mass it contains.
But the recent discovery of "Dark Energy" indicates there may be another form of energy that contributes to the volume of the universe and its contents.
Recent observations of Type Ia supernovae (SNe-Ia) indicate the expansion of the universe is accelerating. This suggests the existence of an expansive force or "Dark Energy" that opposes the contractive gravitational force associated with mass. However, physicists have been unable to define a source or mechanism responsible for this energy.
But they do know there exists dynamic oppositely directed relationship between mass and energy defined by the equation E=mc^2. In other words, in a closed system if the mass contained in a volume decreases the energy in that volume increases and vice versa when the energy in a volume decreases the mass must increase.
Therefore, due to the asymmetry between the quantity of mass and energy in a closed system we should expect an asymmetry between the quantity of forces those systems contain. In other words, we would expect a force to be generated that is oppositely directed with respect to the gravitational forces when we convert mass to energy.
This force has been given the name Dark Energy and is responsible for the accelerated expansion of the universe.
However, the "concentration" of Dark Energy relative to gravitational energy is also defined by the equation E=mc^2c were "c" equals the speed of light. This means its "concentration" and therefore its strength is 1/c^2 weaker than gravitational forces.
The reason we have only just observe Dark Energy is because until recently we have not had the technology to such detect the extremely small effects it has on its environment relative to gravitational energy.
However, this means a star would not necessarily have to collapse to a one dimensional point but only to the point where the compressive forces due to its gravity equals the oppositely directed or expansive forces associated with the Dark Energy contained in that mass.
This is because if Dark Energy is integral component of mass, as Einstein’s equation E=mc^2 tells us as the distance between the gravitational components of a star decreases there will be a point where they will be balanced by the repulsive forces of dark energy.
In other words, it would collapse to the non-zero volume where the "concentration" of expansive forces associated with Dark Energy equal the concentration of the contraction forces associated with gravity.
(We have explored the ramification of Dark Energy to the existence of a singularly in the article "An alternative to a singularity?" Aug. 15-08
This suggests our common sense feeling that it is not possible for the entire mass of star to collapse to a singularity or a one-dimensional point may be valid.
In other words even though there is irrefutable observational evidence that black holes exist, the mysterious singularity that is said to exist at its center may be a myth.
Later Jeff
The "Shadow’s" of four spatial dimensions
Copyright 2008 Jeffrey O’Callaghan
(In a PDF format)
well were are the myths because i am needing five myths about the black hole
Cherie
You may be able find some additional myths that I did not mention in the video. However, if you need more check out this NASA site http://imagine.gsfc.nasa.gov/docs/science/know_l2/black_holes.html
Jeff
can i download this video i need it for my project…
reply asap
Yes you may download the video on this site. However please remember to give credit to the Chandra X-Ray team if you use it
Jeff
hm. hope to see same more info