suppose a charged particle moves with a velocity v near a wire carrying an electric current.a magnetic force,therefore,acts on it.if the same particle is seen from a frame moving with velocity v in the same direction,the charge will be at rest.will the magnetic force become zero in this frame?will the magnetic field become zero in this frame?

Question

anonymous · Answer

Careful... Take a VERY VERY close look at what is meant by observation and measurement... I think Wikipedia has some great examples actually, so rather than me try to just paraphrase I'll give you some reading material :-D http://en.wikipedia.org/wiki/Quantum_paradox#Quantum_mechanical_paradoxes

anonymous · Answer

Have you ever heard of this Quantum Mechanics paradox?  

The more you know about the properties of particle in motion the less you can tell me about it's position at a given time, and the more you know about it's position in time the less you can tell me about it's properties.

I remember this clearly still to this day in a debate I had with a group of chemists and physicists regarding electrons and photons.  I mostly listened to them talk and kinda started it by asked questions such as this:
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