What is Twin Paradox?
The Twin Paradox is a thought experiment that describes the strange implications of time dilation in special relativity.
To understand suppose two identical twins, twin earth and twin star.
Twin earth stays on Earth, while twin star travels to a distant star at high speed (close to the speed of light).Due to time dilation, time passes more slowly for twin star during his journey. This means that when twin star returns to Earth, he will have aged less than twin earth. How the paradox arises?
The paradox arises when we consider the following:
1.Symmetry: From twin star's perspective, twin earth is moving away from him at high speed. Shouldn't time dilation apply to twin earth as well?
2.Asymmetry: However, when twin star returns to Earth, he will have aged less than twin earth . This seems to imply that time dilation is not symmetrical.
Is Twin paradox symmetrical or unsymmetrical? Twin paradox is unsymmetrical due to unsymmetrical time dilation,age difference,relative motion,acceleration and inertial frame of reference.
Resolving the Paradox
The paradox is resolved by considering:
1.Acceleration: Twin star's journey involves acceleration and deceleration, which breaks the symmetry between the two twins.
2.Inertial Frames: Alice remains in a single inertial frame (on Earth), while twin star switches between two inertial frames (on the spaceship and on Earth).
3.Time Dilation: Time dilation occurs only when an object is in motion relative to an inertial frame. Since twin star is accelerating and decelerating, his experience of time dilation is different from twin earth's.
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