Twin Paradox & Bondi K-Calculus: Who's Younger?

In summary: This will affect the interpretation of Bondi K-Calculus. In summary, the Bondi K-Calculus depends on who sends the signal in a twin paradox scenario, where two twins A and B make a journey and one sends a signal and the other receives it. After the journey, the twin who sent the signal will see the other twin younger, regardless of who sent the signal. This holds true even if the roles are reversed and the other twin sends the signal and the first twin reflects it. However, more details are needed to fully understand the situation and apply Bondi K-Calculus accurately.
  • #1
Mohammad Fajar
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Bondi K-Calculus very depend on who was send the signal. If two twin A and B make a journey, A send a signal and B receiving the signal then yes after the journey A will see B younger, and this applied too for the case B sending a signal and A reflecting, then after the journey A will younger.
 
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  • #2
This is wrong. Please post your working in detail and we can work out where you went wrong.
 
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Likes vanhees71
  • #3
Mohammad Fajar said:
If two twin A and B make a journey
You need more details here too
 
  • #4
Dale said:
You need more details here too
True. I assumed he was talking about a twin paradox scenario. If there's no return leg then the situation may well be symmetric.
 
  • #5
Mohammad Fajar said:
Bondi K-Calculus very depend on who was send the signal.
One thing that you need to understand from the outset is that standard approaches are standard for a reason: they work. If you think that you have found a mistake in a standard approach then >99% it is your mistake. Please post accordingly. For example “When I try to use Bondi K-Calculus somehow it seems to depend on who sends the signal”
 
  • #6
Mohammad Fajar said:
Bondi K-Calculus very depend on who was send the signal. If two twin A and B make a journey, A send a signal and B receiving the signal then yes after the journey A will see B younger, and this applied too for the case B sending a signal and A reflecting, then after the journey A will younger.

Some more details on the scenario are needed. Are you comparing A and B when they are at different locations (travelling away from each other), or are you comparing them when they're both at the same location (which implies that one of them turns around).
 

Related to Twin Paradox & Bondi K-Calculus: Who's Younger?

1. What is the Twin Paradox and Bondi K-Calculus?

The Twin Paradox is a thought experiment in special relativity that explores the concept of time dilation. It involves two identical twins, one of whom stays on Earth while the other travels at high speeds through space. The Bondi K-Calculus is a mathematical tool used to calculate the time dilation effect in the Twin Paradox.

2. How does the Twin Paradox and Bondi K-Calculus work?

According to special relativity, time is relative and can be affected by differences in speed and gravitational fields. In the Twin Paradox, the twin who travels at high speeds experiences time dilation, meaning that time passes slower for them compared to the twin who stays on Earth. The Bondi K-Calculus is used to calculate the exact amount of time dilation in this scenario.

3. Who is younger in the Twin Paradox?

In the Twin Paradox, the twin who travels at high speeds is younger when they return to Earth compared to their twin who stayed behind. This is because the time dilation effect caused by their high-speed travel slows down their aging process.

4. Can the Twin Paradox and Bondi K-Calculus be proven?

The Twin Paradox and Bondi K-Calculus are based on the principles of special relativity, which has been extensively tested and proven through experiments. While the thought experiment itself cannot be physically tested, the mathematical calculations and predictions made by the Bondi K-Calculus have been confirmed through real-world experiments and observations.

5. Are there any real-life examples of the Twin Paradox and Bondi K-Calculus?

The Twin Paradox and Bondi K-Calculus apply to any scenario involving objects moving at high speeds, such as astronauts on space missions or particles in a particle accelerator. For example, a clock on a GPS satellite orbiting Earth experiences time dilation, which is accounted for by the Bondi K-Calculus to ensure accurate timekeeping for GPS systems.

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