The Mystery of Light and the Theory of Relativity
The Theory of Relativity states a particle’s or an object's time slows down when the object's speed approaches the speed of light. Meaning the object itself or someone in the object would not notice a change in speed of time, but an outside observer would notice that the object's rate of time has slowed down when approaching the speed of light.
If an object could achieve the speed of light (this would require infinite energy and mass, thus it is currently believed impossible), then the object would cease to have any time progression. In other words, the object would have no time relative to any other object not traveling at the speed of light. The first mystery of light is does the object itself or someone in the object continue to perceive a change in time or would the object be frozen in time for itself without comparison to object's not traveling the speed of light? This is a moot point, since it is believed that no object could accelerate to the speed of light, as mentioned before.
Now, the real mystery of light is that it is traveling at the speed of light and that appears to be an unattainable velocity. Therefore the mystery ask does light, relative to every other object in the universe, have a concept of time and progresses in time? It obviously travels through time to reach its' destinations, hence the concept of the speed of light. Since, an object cannot have a speed or velocity without a change in time.
The only logical explanation that I can give is that light, or photons that make up light, is not an object or particle, therefore the Theory of Relativity does not apply to it. In other words, light only has some of the properties of a particle but not all of the properties of a particle (for example, photons have no known mass). Therefore, light is not directly affected by time rate changes caused by the Theory of Relativity.
Alternatively, the Theory of Relativity could only apply for objects approaching the speed of light and not for objects that are traveling the speed of light. Mathematically, this is not logical, since the equations appear to work for objects traveling the speed of light and slower.
The next theory is that the Theory of Relativity does apply to light, and light has no time to an outside observer not traveling the speed of light. However, light has an internal time to itself, thus light does travel during time to an outside observer.
Finally, there is one other theory about light. And that is light has no time and ceases to exist as soon as it is observed or interacts with any object or particle. Yet, as light is traveling at the speed of light, it is not light. But rather, traveling light is basically an excitation field that travels at the speed of light and can interact with particles; however, traveling light is not a particle or a wave, yet has some properties of both particles and waves.
Now you see why light is such a big mystery.
by Phil B.