Can Electromagnets Instantly Communicate Across Light Years?

[JPC]

hey

if you have like 2 electromagnets a few light years away from each other

lets say if u turn them on at the same time (ok let's say they're very very powerful)

will they react to the new magnetic field instantly , or will we have to wait a few years for the photons to go from one electromagnet to the other


if answer : instantly :
how is this possible ?

 

[mathman]

They will have to wait for the photons to traverse the distance.

 

[ranger]

Which brings up a next point. Nothing is instantaneous.

 

[HallsofIvy]

Oh- electromagnets. I thought this was going to be about applying electricity to romance! I'm disappointed.

 

[JPC]

but hey

is gravity instatanuous or do we have to wait for the gravitons to travel the distance ?

if not instatanous :
is the graviton speed equal to c ?

 

[sas3]

Which brings up a next point. Nothing is instantaneous.

So if we can find out what what "Nothing" is made of we could travel faster then light.

 

[sas3]

The force of Gravity travels at the speed of light.

 

[JPC]

So if we can find out what what "Nothing" is made of we could travel faster then light.

I think it would be more rational to just try to get at least to a tenth of c , before we try that