Is it correct to say a varying electric field creates a magnetic field and vice-versa instead of saying that a charge creates such fields?
"As well as" would work better than "instead of":Is it correct to say a varying electric field creates a magnetic field and vice-versa instead of saying that a charge creates such fields?
"As well as" would work better than "instead of":
- A varying electrical field will produce a magnetic field.
- A varying magnetic field will produce an electrical field.
- Electrical charges will produce an electrical field.
Google for "Maxwell's equations" if you want to see the real thing.
Soooo, anyway there must be a "body" which first creates a field. In this case the "body" is the neutrino, no??
Yes, I'm trying to say that it would be there a source of a electric or a magnetic field, but only for the first field (electric or magnetic) to be created. Then this field changing would create the second. Example: in a magnet we have a magnetic field, created by the charges arrangement. This field changing creates a electric field, as you know.
You recommended me to look at the Maxwell equations... yes, those equations tell us a lot about the behavior of the fields, but what I'm wondering is if you go back in space you'll find a source that is generating at least one of them.
Ok, so let us imagine our universe with no charges. Would we still have a electric or a magnetic field in some point of the universe?
It's interesting how the em field is stated by Wikipedia: "An electromagnetic field (also EM field) is a physical field produced by electrically charged objects".