How can a photon's mass be >0?

Question

If a photon had any mass, and mass increases to infinity at the speed of light (c), the entire universe would be one big photon...well, maybe it is... :o)

Answer 1

Photons have energy and momentum, but no measurable mass. If photons had mass, many elements of theory would have to change (including the exponent in Coulomb's Law).

Experiments designed to detect the mass of a photon show that photons have no measurable mass within the limits of the detectors. Thus far, these experiments place an upward limit on the mass of the photon of 10^(-50) grams, a REALLY small number. This is the physicists way of saying that if the photon had a mass of this much, we would have seen it; we didn't, and since the detectors could not see mass less than this the best we can conclude is that if the photon has any mass at all, it must be less than 10^(-50)

Answer 2

Mass is the Tangible substance of the Universe which is relative to The quotient of a volume in space and the product of a Constant that is Universal and the period square of ocillation that the mass substance is moving.

If a an entity collides with another entity and bounce off ,it is defined a mass within the Realm of the Universe.
Photon is not an entity but its a mathematical construct that indicates how much radiative power falls on a per unit area.
If Photon is mererly a mathermatical construct we cannot call it a mass.
Hence Photon only represents a Unit of Radiation Power density of light..
If light is real and is en entiy than its a mass as defined per The" Quantron Theory."Note one particle of light Cannot be isolated and shadowed.That means that light is an invisible substance.Moreover, one micromass particle of light cannot be dissected and observed in an experimental laboratory

It is true of what you indicate about the Entire Universe being composed of Light.(one big Photon?)
As per the Biblical Record of Creation ,Light was the prerequisite mass before all other mass structured celestial bodies.
Note that mass of light may have been what George Lemaitre called A Premordial Masss structure.And is most likely in reality what is referred presently as the " Singularity."
That means that the Light particle mass IS the Created Singularity that is indivisible and which moves at a particular set value of Energy in the local space at which it interacts.

Mass increasing with increasing velocity violates the 2nd law of Thermodynamics. Velocity increase can only take place as a function of mass decrease as Indicated by the Laws of thermodynamics.
That means at velocities nearing the speed of light a mass must diminish in value .NO INCREASE.

Physics is really simple if you put it in the proper perspective.