Understanding Time Dilation in Einstein's Theory of Relativity

In summary, Einstein's theory of relativity suggests that a clock moving at a constant velocity will experience time dilation and appear to tick slower compared to a stationary clock. This is illustrated by the example of a clock traveling in a closed curve and arriving back at its starting point, where it will be .5tv^2/c^2 seconds slower than a stationary clock. This means that a balance-clock at the equator, which is moving faster than a clock at the poles, will appear to tick slower by a very small amount. The author's phrasing may be confusing, but it essentially means that the faster the clock is traveling, the slower it will appear to tick.
  • #1
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In section 4 STR Einstein wrote -

"If one of two synchronous clocks at A is moved in a closed curve with constant velocity until it returns to A, the journey lasting t seconds, then by the clock which has remained at rest the traveled clock on its arrival at A will be a .5tv^2/c^2 second slow. Thence we conclude that a balance-clock at the equator must go more slowly, by a very small amount, than a precisely similar clock situated at one of the poles under otherwise identical conditions."

What do people think he meant by the phrase "...must go more slowly..."?

Does anyone agree that he meant that the moving clock will tick over at a slower rate than (i.e. incur time dilation relatively to) the other clock?
 
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  • #2
You worded it much better than he did. Obviously the clock at the equator is traveling faster but ticking slower so what the author was saying is that the clock was going slower by going faster.
 
  • #3


Yes, it is commonly understood that Einstein meant that the moving clock will experience time dilation, meaning that it will tick at a slower rate compared to the stationary clock. This is a fundamental concept in Einstein's theory of relativity, which states that the passage of time is not constant and can be affected by factors such as velocity and gravity. In this case, the moving clock experiences time dilation due to its constant velocity, causing it to tick at a slower rate than the stationary clock. This concept has been extensively proven and verified through numerous experiments and observations.
 

1. What is time dilation in Einstein's Theory of Relativity?

In Einstein's Theory of Relativity, time dilation refers to the slowing down of time for an object or observer that is moving at a high velocity compared to another object or observer. This phenomenon occurs due to the curvature of spacetime and is a fundamental concept in understanding the effects of gravity and the speed of light on time.

2. How does time dilation work?

According to Einstein's theory, time dilation occurs because the speed of light is constant in all frames of reference. This means that as an object or observer moves faster, their perception of time slows down in relation to a stationary object or observer. This is because the faster an object moves, the more it distorts the fabric of spacetime, causing time to pass more slowly for that object.

3. What are some examples of time dilation?

One of the most well-known examples of time dilation is the famous "twin paradox," in which one twin travels at a high velocity in outer space while the other remains on Earth. When the traveling twin returns, they will have aged less than their Earth-bound sibling due to the effects of time dilation. Other examples include the time dilation experienced by particles in particle accelerators and the time dilation experienced by astronauts in space.

4. How is time dilation measured?

Time dilation can be measured using precise clocks and comparing the time elapsed for an object or observer in motion versus a stationary object or observer. For example, atomic clocks have been used to measure the effects of time dilation on airplanes and satellites. Additionally, the effects of time dilation can also be observed through experiments utilizing high-speed particles and their decay rates.

5. What are the implications of time dilation?

The implications of time dilation are far-reaching, as it challenges our understanding of the nature of time and how it is perceived. It also has practical implications for space travel and communication, as the effects of time dilation must be taken into account when sending spacecraft or signals at high velocities. Time dilation also plays a crucial role in Einstein's theory of gravity, known as general relativity, which has had a significant impact on our understanding of the universe.

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