In 1933 Fritz Zwicky a Swiss astronomer, was trying to measure the mass of a galactic cluster using two different methods. First he tried to infer it from the rational speed of the galaxies around the center of the clusters. Just like kids on a merry-go-round have to hold on to avoid being ejected, galaxies are held together in a spinning galactic cluster by the gravitational force provided by the matter it contains because if there were not enough matter to create this force, the galaxies would simply scatter.
He then compared his result with the mass evaluated from the light the galaxies shed. He realized that there was way more matter in the cluster than what was visible or baryonic matter. This matter of an unknown type generated a gravitational field without emitting light; hence its name, dark matter.
Further observations suggest the baryonic or visible forms of matter in the universe only comprise approximately 5 to 10% of the mass required to account for the total gravitational energy in the universe.
The search for this missing mass has focus on three different types of particles or objects that would be invisible or would not interact with electromagnetic energy while at the same-time influenced by the gravity forces of the visible mass component our universe.
The first or Axions are very light particles with a specific type of self-interaction that makes them a suitable CDM candidate. Axions have the theoretical advantage that their existence solves the Strong CP problem in QCD, but have not been detected.
The second or MACHOs or Massive Compact Halo Objects are large, condensed objects such as black holes, neutron stars, white dwarfs, very faint stars, or non-luminous objects like planets. The search for these consists of using gravitational lensing to see the effect of these objects on background galaxies. Most experts believe that the constraints from those searches rule out MACHOs as a viable dark matter candidate.
Finally WIMPs or Dark matter which is composed of Weakly Interacting Massive Particles. There is no currently known particle with the required properties, but many extensions of the standard model of particle physics predict such particles. The search for WIMPs involves attempts at direct detection by highly sensitive detectors, as well as attempts at production by particle accelerators. WIMPs are generally regarded as the most promising dark matter candidates. The DAMA/NaI experiment and its successor DAMA/LIBRA have claimed to directly detect dark matter particles passing through the Earth, but many scientists remain skeptical, as null results from similar experiments seem incompatible with the DAMA results.
However Einstein suggested another possibility in the speech “Aether and the theory of Relativity” he made on May 5th 1920 at the University of Leyden Germany where he indicated that The General Theory of Relativity predicts, that “space is endowed with physical qualities”
“Recapitulating, we may say that according to the General Theory of Relativity space is endowed with physical qualities; in this sense, therefore, there exists Aether. According to the General Theory of Relativity space without Aether is unthinkable; for in such space there not only would be no propagation of light, but also no possibility of existence for standards of space and time, nor therefore any space-time intervals in the physical sense. But this Aether may not be thought of as endowed with the quality characteristic of ponderable media, as consisting of parts, which may be tracked through time. The idea of motion may not be applied to it.”
However Einstein only endowed space with the field properties of a space-time dimension and not the physical qualities of mass. Therefore if one accepts the validity of his theory the physical properties he was referring to must be a result of those field properties not those of mass in its particle form. This suggests the missing mass found by Fritz Zwicky may be related to those field properties not those most associate with the mass of objects or particles.
Yet it is difficult to form a clear picture of how a field consisting of space-time can have the physical properties of Dark Matter because as was shown in the article “Defining what time is” Sept. 20, 2007 time is not perceived by most as matter or space but as an irreversible physical, chemical, and biological change in physical space. Therefore it is difficult to understand how the physical properties Einstein associated with space or Dark Matter can interact with the non physical properties of a time or a space-time dimension to create a gravitational field.
But Einstein gave us the ability to solve this and develop more direct understand how and why the field properties of space-time can be responsible for Dark Matter when he used the equation E=mc^2 and the constant velocity of light to define the geometric properties of mass in a space-time universe. This is because that provided a method of converting a unit of time associated with energy in a space-time dimension to unit of space associated with mass in four *spatial* dimensions. Additionally because the velocity of light is constant he also defined a one to one quantitative correspondence between his space-time universe and one made up of four *spatial* dimensions.
This tells us that one can use Einstein’s theory to define gravitational potential in terms of the continuous field properties of four *spatial* dimensions which means if one is to accept his theory one must also assume that space contains a continuous field of mass.
However this contradicts the current world view shared by most physicists and cosmologists that mass only exists in its particle or quantized form. This is true even though observations tell a different story.
For example Louis de Broglie was the first to predict space is made up of the field properties of mass when he theorized that all particles have a wave component. His theories were confirmed by the discovery of electron diffraction by crystals in 1927 by Davisson and Germer.
In other words the mass we associate with the particles must be composed of the oscillation in the field properties of space because that is the only thing that could be responsible for their wave components. Therefore those fields must also have the properties associated with mass.
If this is true why then do we only observe its particle properties?
One can understand why by extrapolating the laws of governing resonance in a three-dimensional environment, as was done in the article “Why is energy/mass quantized?†Oct. 4, 2007 to the field properties of the wave Davisson and Germer observed particle to be composed of to a fourth *spatial* dimension.
Briefly it showed the four conditions required for resonance to occur in a classical environment, an object, or substance with a natural frequency, a forcing function at the same frequency as the natural frequency, the lack of a damping frequency and the ability for the substance to oscillate spatial would occur in one consisting of four spatial dimensions.
The existence of four *spatial* dimensions would give the continuous field properties of mass the ability to oscillate spatially on a “surface” between a third and fourth *spatial* dimensions thereby fulfilling one of the requirements for classical resonance to occur.
These oscillations would be caused by an event such as the decay of a subatomic particle or the shifting of an electron in an atomic orbital. This would force the “surface” of a three-dimensional space manifold to oscillate spatially with the frequency associated with the energy of that event.
The oscillations caused by such an event would serve as forcing function allowing a resonant system or “structure” to be established space.
Therefore, these oscillations in a “surface” of a three-dimensional space manifold would meet the requirements mentioned above for the formation of a resonant system or “structure” in four-dimensional space if one extrapolated them to that environment.
Classical mechanics tells us the energy of a resonant system can only take on the discrete or quantized values associated with its fundamental or a harmonic of its fundamental frequency.
Hence, these resonant systems in the field properties of space would be responsible for it particles properties.
Yet one can also define its boundary conditions in terms of the classical laws space and time.
For example in classical physics, a point on the two-dimensional surface of paper is confined to that surface. However, that surface can oscillate up or down with respect to three-dimensional space.
Similarly an object occupying a volume of three-dimensional space would be confined to it however, it could, similar to the surface of the paper oscillate “up†or “down†with respect to a fourth *spatial* dimension.
The confinement of the “upward†and “downward†oscillations of the field properties of mass with respect to a fourth *spatial* dimension is what defines the spatial boundaries associated with a particle in the article “Why is energy/mass quantized?“
However there are at least two reasons why we are unable to directly observe the field properties of the mass component of space. The first is because all observations require an exchange of energy between what is being observed and the observer. However the most effective and efficient way for nature to transfer information to our instruments is, as was shown in the article “Why is energy/mass quantized?“ in a resonate system made up of the field properties of mass. Therefore in all measurements the particle properties associated with its resonant system will always be predominant over its field ones.
This is why as mentioned earlier its field properties are only observable in terms of the interference of the wave properties particles as was demonstrated by the discovery of electron diffraction by crystals in 1927 by Davisson and Germer.
The second is that to measure a quantity there must be a physical difference between what is being measured and what is doing the measuring.
For example one cannot measure the changing level of water in a ship lock from a ship in it by measure how high it is above the surface of the water ship is floating on because it is changing at the same rate.
Similarly one cannot measure the field properties of the mass component of space because the field properties in the measuring instrument would be changing at the same rate.
However as mentioned earlier we can indirectly measure how the field properties of mass interact with particles as was shown by in 1927 by Davisson and Germer observation of electron diffraction by crystals
The above discussion not only defines why we cannot directly observer Dark Matter but also how it creates gravitational potential in terms of the field properties of four dimensional space-time or four *spatial* dimensions.
Unfortunately for those who disagree the above conclusion is based purely on observations and the validly of Einstein theories. Therefore to deny the existence of a continuous field of Dark Matter and it gravitational influence one would have to deny the validity of Einstein theories.
It should be remember Einstein’s genius allows us to choose to define all environments in either space-time or one consisting of four *spatial* dimension when he defined their geometry in terms of the constant velocity of light. This interchangeability broadens the environment encompassed by his theories by making them applicable to both the quantum and field properties of space thereby giving us a new perspective on their interactions.
Later Jeff
Copy right Jeffrey O’Callaghan 2015