Relative speed of a photon

Linear and angular speeds of a photon are with respect to the universal medium (2D energy fields) in the region of its motion. Its linear speed is a critical constant; because that is the highest possible linear speed at which the universal medium can transfer structural distortions without rupturing 2D energy fields’ latticework structures. Hence, linear speed of light in any region space, in any direction is a critical constant for that region of space. A photon traverses the same number of 2D energy fields’ latticework squares in the same interval of time. (Note that the scale of time and distance in any region of space are defined in terms of observed linear speed of light). Usually, the observer is also located in the region of universal medium, where the speed of light is considered. Under such conditions linear speed of light with respect to the observer is identical in all direction, irrespective of motions of the observer. This is because the linear speed of the observer with respect to the surrounding universal medium is negligible, when compared to the linear speed of light with respect to the surrounding universal medium. If the observer is small enough to move with considerable speed with respect to the surrounding universal medium, linear speed of light in the region will obey all physical rules of relative motion, as any other body’s motion. Linear speeds of two photons (moving in parallel path in the same direction) with respect to each other are nil. Linear speeds of two photons (moving in parallel path in opposite directions) with respect to each other are equal to double the speed of light. Discrepancies appear only when the speed of light in different regions of space (with different universal medium-distortion status) are compared. This is how we came to regard; (a) the linear speed of light as variable, when the light is transmitted inside a medium within the region where the observer is present. (b) the time as variable, when the light is transmitted in a medium, outside the region where the observer is present.