A recap of the main points so far… Observers moving uniformly with respect to each other • do not agree on time intervals or distance intervals • do not agree about the simultaneity or otherwise of events A moving clock appears to run slow – time dilation A moving ruler appears short – length contraction •A moving object has an increased relativistic mass
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A recap of the main points so far… Observers moving uniformly with respect to each other
A recap of the main points so far… Observers moving uniformly with respect to each other do not agree on time intervals or distance intervals do not agree about the simultaneity or otherwise of events A moving clock appears to run slow – time dilation - PowerPoint PPT Presentation
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Transcript
A recap of the main points so far…
Observers moving uniformly with respect to each other
• do not agree on time intervals or distance intervals
• do not agree about the simultaneity or otherwise of events
A moving clock appears to run slow – time dilation
A moving ruler appears short – length contraction
•A moving object has an increased relativistic mass
•Mass can be converted into energy (and vice-versa)
E = m c2
The Twins Paradox
Symmetry
As far as the observer on the spaceship is concerned, a clock left on Earth is running slow and lengths are contracted in the direction of motion.
As far as the observer on Earth is concerned, a clock on the spaceship is running slow and lengths are contracted in the direction of motion.