I was wondering.....
What happens to magnetic and electric feilds near the speed of light? in theory?
2007-06-01 10:22:03 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Physics
eg a magnet near the speed of light.
and light is an electromagnetic WAVE.
2007-06-01 10:26:59 · update #1
what happends to charge near the speed of light?
2007-06-01 10:31:14 · update #2
They still exist. But if you mean you move the charges or currents with relativistic speed - their field will look different to a stationary observer. There are mathematical formulas called Lorentz Transforms that you have to apply in order to get the answer. I don't remember them off hand. You can look them up in Jackson's "Electrodynamics" or in Landau and Lifshitz "Theory of Fileds" book.
2007-06-01 10:31:17 · answer #1 · answered by Snowflake 7 · 3⤊ 0⤋
Indeed the electromagnetic fields are light so the they travel at a speed c. May be you may ask what happens with the field if the source is moving near the speed of ligh, the the answer would be the same nothing. The only thing that changes are the measurements of the strengh of the fields when you change your reference frame, but this the relativistic feature that is well understood, electromagnetism is preserved under Lorentz transformations
2007-06-01 10:32:49 · answer #2 · answered by Víctor V. 2 · 2⤊ 1⤋
This question kind of puts the carriage before the horse.
Magnetic filed is created by moving charges.
It's common knowledge, is not it?
Well, moving with respect to what?
Lets say we have electron moving with speed v,
with respect to observer at rest.
Then electron generates both magnetic, and
electric field from the point of view of the observer.
But in the frame of refernce of electron,
this electron is at rest and the field is
pure electric and no magnetic field.
The inevitable conclusion, that electric and magnetic
fields must 'inter-mix' if we change the velocity of
of our frame of reference.
Nowdays people say that electromagnetic interaction is
described by Lorentz-covariant tensor of electro-mgnetic field.
When you start moving, the field itself will not change,
but the way you see it -- will. Part of magnetic fleld will
turn into electric field, and vice versa.
2007-06-01 10:44:04 · answer #3 · answered by Alexander 6 · 2⤊ 0⤋
hi Pete - the subject is which you replaced your inertial physique interior the process the question. You began via declaring that each and each focused visitor exchange into shifting at 0.9c in opposite guidelines - yet relative to what inertial physique? then you definately stated that the inertial physique exchange into related to focused visitor A. as quickly as you probably did that, the courting between the two travellers replaced, through fact which you could state relative velocities in terms of one physique of reference. once you do this and persist with the Lorentz rework equations as defined above, you come across that no merchandise can attain the fee of sunshine relative to a distinctive observer in any physique of reference. issues like measured term and measured length interior the inertial physique exchange with the intention to make this all real.
2016-12-18 11:05:54 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Nothing, magnetic and electric fields ARE light.
2007-06-01 10:25:33 · answer #5 · answered by Regal 3 · 1⤊ 2⤋
Nothing.
2007-06-05 03:35:04 · answer #6 · answered by johnandeileen2000 7 · 0⤊ 0⤋
As the two are 'forces', and not matter, or materials, the velosity of ether could not be a 'relitive' in an equasion.. the SORCE of one or the other would certinly be...tho.
....mmm...
..mm....................................................................................?
2007-06-01 10:42:00 · answer #7 · answered by olddogwatchin 5 · 0⤊ 2⤋