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Time Dilation

Swetha 10/07/2023

News
Scientists' use of quasars
Demonstrate time dilation in early universe
What
Consequence of Einstein’s Theory of Relativity
Time is relative
Time passes at different rates
Depending on observers' relative positions or motions in gravitational field
Slowing down of clock
As determined by observer in relative motion with respect to the clock
How
Time dilation due to effects of motion, gravity on time flow
According to Einstein's theory of relativity
Time can vary depending on observer's motion, strength of gravity
High-speed relative motion between objects
Time appears to slow down for moving object relative to stationary one
Known as "time dilation"
Consequence of constant speed of light, principle of physics being the same for all observers
Faster an object moves, more pronounced time dilation effect
Presence of strong gravitational field
Time appears to run slower compared to weaker gravitational field
Gravitational time dilation
Caused by curvature of spacetime near massive objects
Like planets, stars, black holes
Clocks closer to a massive object tick slower
Compared to those farther away
Confirmed through various experiments
Such as Hafele-Keating experiment, high-speed particles, atomic clocks measurements
Facts
Twin paradox
Thought experiment illustrating effects of time dilation
Involves two twins
Twin A stays on Earth
Twin B travels in high-speed spaceship
Twin B accelerates to significant fraction of speed of light
Turns around, returns to Earth
Time dilation effect on twin B during journey
Experiences time passing more slowly than twin A
On return, less time passed for twin B
Compared to twin A on Earth
Twin B appears younger than twin A
Paradox of one twin aging more slowly
Despite both being born at the same time

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Categories: Science & Technology

Tags: 08.07.2023, Newsbits

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