Recent content by 123987

So how do you think about the EM field? In your mind is it everywhere, exists independent of charge and is warped by charge, like how space-time is warped by mass to cause gravity?

In this picture it takes some time for the EM field to affect things from the new position. The EM field has to travel through space.

Two electrons in a vacuum, electron 1 and electron 2. They are repelling each other. Electron 1 is moved to a new position. Is electron 2 instantly repelled from the new position of electron 1? Or does it take some time before electron 2 is repelled from the new position?

Then why are the electrons not instantly repelled?

Yeah I was trying to think of a better situation, but i got distracted and did something else. Your situation works. Imagine two electrons in a vacuum, they are being repelled by each other, then one electron is moved to a new position. Is the other electron instantly repelled away from the new...

Yes we can because what you think will happen is informed by experiments backed up by evidence.

Imagine a vacuum with one electron in it. Now imagine a second electron magically pops into existence some distance from the first electron. Are the electrons instantaneously repelled from each other, or does the electric field have to travel through space at the speed of light? Pretend that...

You said that EM field does not travel, only changes in EM field travel. Then sophiecentaur said that EM waves travel through space the same way that water waves travel through water. Okay, I understand how water waves propagate through water. A wave needs a medium to propagate through. What...

Light is an oscillating EM field, and light travels through space. Are you saying that EM field is a dimension like space, it exists everywhere, and light is just a disturbance in the EM field, the same way that gravity is a disturbance of space?

So you're saying that EM field exists independent of charge? I thought EM field is emitted by charge. I thought that you can't have EM field without charge.

But electric fields are emitted, and do actually move through space at the speed of light. If electric fields did not travel through space then information transfer would be instantaneous, but it is not.

Well, electric field is constantly emitted from charges in all directions right? I was thinking that photons were the same thing as electric field.

Are photons the things which are constantly emitted from electric charges in all directions, which then interact with other electric charges, or are photons something else? If photons are constantly emitted from electric charges in all directions, and photons are particles, as the ring of...