[jeffreyH (OP)]

We have a theory of the gravitational singularity. This involves time dilation and length contraction among other properties. At this point physics breaks down. The other area of physics that breaks down is the approach of light speed by particles other than photons. This also involves time dilation and length contraction. As the photon is an expression of electromagnetic radiation and has a zero rest mass could it in some sense be thought of as an electromagnetic singularity. As any mass that could possibly reach light speed would be compressed in the direction of travel in much the same way as it is approaching a gravitational singularity. The difference being that gravitational collapse will involve low energy states whereas electromagnetic singularities involve high energy states and a constant velocity. It could also be assumed that at the singularity, within its frame of reference, we could reach absolute zero and zero velocity.

[Pmb]

We have a theory of the gravitational singularity. This involves time dilation and length contraction among other properties. At this point physics breaks down.
[\quote]
Sure. It has an infinite energy density just like a black hole. It has energy right? It has zero spatial extension, right? Therefore the energy density must be infinite where the photon is (Bill S wouldn't like this

[jeffreyH (OP)]

We have a theory of the gravitational singularity. This involves time dilation and length contraction among other properties. At this point physics breaks down.
[\quote]
Sure. It has an infinite energy density just like a black hole. It has energy right? It has zero spatial extension, right? Therefore the energy density must be infinite where the photon is (Bill S wouldn't like this

If we could find a commonality between the gravitational and electromagnetic singularities then we may have the theory of everything and unify all the fields and forces. This does throw up an anomaly. It appears to me that as the electromagnetic spectrum relates to the electron then gravity may relate to the atomic nuclei. The nucleus involves strong forces and if these are the source of gravitation then they produce an externally weak force.

[jeffreyH (OP)]

This from wikipedia.

[1. Electric charges attract or repel one another with a force inversely proportional to the square of the distance between them: unlike charges attract, like ones repel.

2. Magnetic poles (or states of polarization at individual points) attract or repel one another in a similar way and always come in pairs: every north pole is yoked to a south pole.

3. An electric current in a wire creates a circular magnetic field around the wire, its direction (clockwise or counter-clockwise) depending on that of the current.

4. A current is induced in a loop of wire when it is moved towards or away from a magnetic field, or a magnet is moved towards or away from it, the direction of current depending on that of the movement.]

In item 1 we have our inverse square law for electric charges that echoes gravitation. This involves a particle (the electron) which in turn produces the field. It may be likely that gravity isn't actually propagated directly by a particle but indirectly because of a particles momentum which then produces the gravitational field. As in electromagnetism it is likely that this can be either positive or negative in nature.

Could there be gravitational radiation?