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Main Question or Discussion Point
Let us imagine a photon circling around a black hole, as the picture shows.
The gravity of the black hole curves the movement path of the photon into the shape of a circle. From point 0, geometric points A and B appear simultaneously with the photon, each in its own direction. The points travel slowly along the photon circumference. After the finished circle, both points and the photon return simultaneously to point 0. The photon is faster, therefore, during the time of one full circle by points A and B it makes N circles. The points encounter the photon. They do not perceive the photon and their encounters are monitored at the level of geometry. Point B, moving in the opposite direction than the photon, encounters the photon N + 1 times. Point A, which moves in the direction of the photon motion, encounters the latter N1 times. Points A and B finish the circle simultaneously. Equal times of the circling are the result of the simultaneous departure of the points from point 0 and their simultaneous return to point 0 after the completed roundtrip. The points (observers at those points) find that point A detects less encounters with the photon than point B, and thereby also shorter photon paths. Point A detects the path of the photon in the length of (N1) times the 'length of the circumference', while the point B detects the path in the length of (N + 1)times the 'length of the circumference'. The points detect different lengths of photons paths within the same time. They detect different photon speeds. Our belief that light has the same speed in all situations is thus perhaps not justified.
The gravity of the black hole curves the movement path of the photon into the shape of a circle. From point 0, geometric points A and B appear simultaneously with the photon, each in its own direction. The points travel slowly along the photon circumference. After the finished circle, both points and the photon return simultaneously to point 0. The photon is faster, therefore, during the time of one full circle by points A and B it makes N circles. The points encounter the photon. They do not perceive the photon and their encounters are monitored at the level of geometry. Point B, moving in the opposite direction than the photon, encounters the photon N + 1 times. Point A, which moves in the direction of the photon motion, encounters the latter N1 times. Points A and B finish the circle simultaneously. Equal times of the circling are the result of the simultaneous departure of the points from point 0 and their simultaneous return to point 0 after the completed roundtrip. The points (observers at those points) find that point A detects less encounters with the photon than point B, and thereby also shorter photon paths. Point A detects the path of the photon in the length of (N1) times the 'length of the circumference', while the point B detects the path in the length of (N + 1)times the 'length of the circumference'. The points detect different lengths of photons paths within the same time. They detect different photon speeds. Our belief that light has the same speed in all situations is thus perhaps not justified.
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