What is the Time Paradox?July 2, 2021
The time difference arising from the dependence of the passage of time on the speed of motion. An astronaut who wanders in the sky for thirty years in a spaceship will have lived for sixteen years according to the clocks in the spaceship. To give an example, he finds his brother, who was four years younger than he when he went on a space journey, ten years older than him when he returns from space thirty years later. (It happens at the same age N.) Albert Einstein explained why this is so in his special theory of relativity. This reason is obvious: because the passage of time is dependent on the velocity of motion. Since the speed of motion of the spaceship is very high, the clocks on the ship run slower than the clocks on earth. However, a man who travels by train around the world does not become younger than one who walks on foot.
The reason for this is also very clear: Because the dependence of time on the speed of motion can be observed at very high speeds approaching the speed of light. At low speeds it doesn’t matter. That is why the line dividing the Pacific Ocean from one pole to the other is called the international date line. Those who cross this line either skip one day and go to tomorrow, or go back one day and return to yesterday. In 1522, the fishermen of the Spanish port of San Lucar greeted Magellan’s sailors on Wednesday, although the sailors said it was Tuesday. This one-day loss, now easily explained, was unexplained then.