Often the link between electric and magnetic fields is not relevant.Jd0g33 said:Why are magnetic fields and electric fields still considered different phenomena?
Jd0g33 said:Why are magnetic fields and electric fields still considered different phenomena? Doesn't relativity and QFT explain that they are the same thing. A photon is a photon, isn't it? I mean, what is happening when two magnets repel? They exchange photons. What happens when two electrons repel? They exchange photons.
(A genuine question, I'm not trying to administer any insight)
davenn said:a static magnetic field isn't comprised of photons
Dave
While both magnetic and electric fields are forms of electromagnetic radiation, they have distinct properties that differentiate them from each other. Electric fields are created by electric charges, while magnetic fields are created by moving electric charges. Additionally, electric fields cause forces on electric charges, while magnetic fields cause forces on moving electric charges. These differences make it necessary to consider them as separate entities.
No, according to Maxwell's equations, magnetic fields are always accompanied by electric fields. This is because a changing magnetic field induces an electric field, and vice versa. Therefore, the two fields are intrinsically linked and cannot exist independently of each other.
Magnetic and electric fields can interact with each other in two ways. Firstly, a changing electric field can create a magnetic field, and a changing magnetic field can create an electric field. This is known as electromagnetic induction. Secondly, a charged particle moving through a magnetic field will experience a force perpendicular to both the magnetic field and the particle's velocity. This is known as the Lorentz force.
Magnetic fields are created by the movement of electric charges. In a magnet, the electrons are all spinning in the same direction, creating a strong magnetic field. The closer you are to the magnet, the stronger the magnetic field will be because the electrons are closer together and their magnetic fields add up to create a stronger overall field.
Yes, both magnetic and electric fields can be shielded, but they require different methods. Magnetic fields can be shielded by using materials with high magnetic permeability, such as iron or steel. These materials redirect the magnetic field lines, reducing the strength of the field. Electric fields can be shielded by using materials with high electrical conductivity, such as copper or aluminum. These materials can absorb and dissipate the electric field, preventing it from passing through.