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20h
comment Intuitive definition of electromagnetic field
I can understand that there are various teaching approaches, but aren't 100% of textbooks the same way as wiki presents the definition? How can it be understood if the actual experiment steps are presented much later or omitted?
20h
comment Intuitive definition of electromagnetic field
@Hurkyl:Yes, but words is to explain and pass an idea. They are not for decoration.
20h
comment Intuitive definition of electromagnetic field
I am a bit confused about your answer. If definitions in physics essentially describe experiments, then why are they presented as definitions instead of presenting the experiment steps and what the conclusion is? I mean the pre-requisite to understand the "definition" is to be familiar with the experiment (whose effect is being described) in the first place, right?
20h
comment Intuitive definition of electromagnetic field
The way you phrase it placing it within the general statement/rule that each action has a reaction really makes a difference in understanding the statement. Some how when I read the statement I could not understand it that way. To be honest before reading what you note to cause such forces you have to be responsive to such forces. I understood that the definition in the wiki was nonsensical like saying: "Red is something that is of red color"
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revised Intuitive definition of electromagnetic field
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asked Intuitive definition of electromagnetic field
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awarded  Popular Question
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awarded  Notable Question
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awarded  Notable Question
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awarded  Popular Question
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awarded  Popular Question
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comment Magnetic fields and gravitational waves. How far do they reach?
The core point of this, is that he claims that an inisignificant action such as the current passing from the wire (from the batery) will have a side-effect which is "broadcasted" into a distance which is disproportionally larger than the action itself (just a small current from a battery). It seems correct in a "gross" way from your answer and of Cris
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comment Magnetic fields and gravitational waves. How far do they reach?
Please see updated OP
Dec
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comment Magnetic fields and gravitational waves. How far do they reach?
Please see updated OP
Dec
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revised Magnetic fields and gravitational waves. How far do they reach?
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asked Magnetic fields and gravitational waves. How far do they reach?
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accepted What is meant by “Nothing” in Physics/Quantum Mechanics(QM)?
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comment What is meant by “Nothing” in Physics/Quantum Mechanics(QM)?
Fair enough.But I guess what you are saying here is that what the observation is, is that in time X there was nothing there and time X+δτ there is an apple.What I don't get is why it is believed that the apple appeared suddenly (and lost afterwards) and not that it was always there, but we couldn't detect it? Seems more reasonable to me that supporting that nothing is the "birth" of something.Does this make sense to you?I don't have your background and perhaps this seems to simplistic/dumb for you
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accepted Naive question on quantum mechanics and uncertainty principle
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comment What is meant by “Nothing” in Physics/Quantum Mechanics(QM)?
Interesting analogy.But where do this apple you add and eat come from?