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Doubt from relativity

Here’s one problem….i am inside a train, the train is moving… and there is one electron inside a train … and I am looking at that electron. In my perspective the electron is not moving and (as my high school teacher told) only moving charged particle  creates magnetic field…so i will not see any magnetic field..but suppose my freind is looking that electron sitting outside the train..then he will see a magnetic field is created…then here is a problem…what is happening in reality..

Is there a magnetic field or not, does a independent reality exist in this case

 

Posted by Aawaz

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