How Can Time Be Relative While the Speed of Light Remains Absolute?

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SUMMARY

The discussion centers on the relationship between time and the speed of light, emphasizing that while time is relative, the speed of light remains constant at approximately 299,792 kilometers per second in a vacuum. Participants clarify that an observer moving at high speed will not measure light as slower compared to a stationary observer. This counterintuitive concept challenges common perceptions and highlights the necessity of adapting one's understanding of physics beyond everyday experiences.

PREREQUISITES
  • Understanding of Einstein's Theory of Relativity
  • Familiarity with the concept of the speed of light as a universal constant
  • Basic knowledge of reference frames in physics
  • Awareness of the implications of relativistic effects on time perception
NEXT STEPS
  • Study Einstein's Theory of Special Relativity in detail
  • Explore the implications of time dilation and length contraction
  • Investigate experimental evidence supporting the constancy of the speed of light
  • Learn about reference frames and their impact on measurements in physics
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the fundamental principles of relativity and the nature of time and light in the universe.

Star786
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I'm really confused!
How can time be relative and speed of light absolute?
If you were moving a long with speed, whilst someone else was stationary would you not measure light to be slower??
 
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I will take the two questions in reverse order. "If you were moving a long with speed, whilst someone else was stationary would you not measure light to be slower?? "
No.

"How can time be relative and speed of light absolute?"
Do you have any reason to think that the speed of light is relative and time is absolute? People only have problems with this because the opposite is intuitively obvious to them. Unfortunately, when it comes to things we do not have everyday experience with, what is and is not intuitively obvious is irrelevant. There is no reason why nature would behave in a way that we can understand. If you are going to think about physics seriously, it is something that is worth getting used to.
 

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