Table of Contents
- 1 Why does a magnetic field breaks time reversal symmetry?
- 2 What is the relation between magnetic dipole moment and magnetic field?
- 3 What is the nature of symmetry of dipole field?
- 4 What is magnetic dipole and dipole moment?
- 5 What kind of symmetry is there in electric field of electric dipole?
- 6 What type of symmetry is there in electric field of electric dipole?
- 7 Do electric dipoles feel torque in a uniform magnetic field?
- 8 What is the difference between electric dipole and static field dipole?
- 9 Are electrons in motion in an electric dipole?
Why does a magnetic field breaks time reversal symmetry?
Time reversal symmetry means the material looks the same when time is reversed. Magnetic spins reverse direction when time reverses direction, therefore magnetic order breaks time reversal symmetry. If a ferromagnetic material is magnetized, the material gains a magnetic dipole.
What is the relation between magnetic dipole moment and magnetic field?
The magnetic field of a magnetic dipole is proportional to its magnetic dipole moment. The dipole component of an object’s magnetic field is symmetric about the direction of its magnetic dipole moment, and decreases as the inverse cube of the distance from the object.
What is the nature of symmetry of dipole field?
The nature of symmetry of a electric dipole is cylindrical in nature, here the axis of cylinder passes through the dipole axis.
Is magnetic field time reversal symmetry?
This happens because a magnetic field is produced by an electric current, J, which reverses sign under T. Thus, the motion of classical charged particles in electromagnetic fields is also time reversal invariant.
What does time reversal symmetry imply?
In quantum mechanics, time reversal symmetry implies that under t going to -t and wavefunction going to its complex conjugate, the Schrodinger equation must remain form invariant. Since in quantum mechanics, under a time reversal, psi goes to psi*, the time reversal operator necessarily has to be anti-linear.
What is magnetic dipole and dipole moment?
An arrangement of two magnetic poles of equal and opposite strengths separated by a finite distance is called a magnetic dipole. The product of the strength of either pole and the magnetic length of the magnet is called magnetic dipole moment.
What kind of symmetry is there in electric field of electric dipole?
cylindrically symmetric
Electric field due to an electric dipole is cylindrically symmetric.
What type of symmetry is there in electric field of electric dipole?
The electric field of dipole is cylindrically symmetric.
What is meant by time reversal symmetry?
T-symmetry or time reversal symmetry is the theoretical symmetry of physical laws under the transformation of time reversal, Since the second law of thermodynamics states that entropy increases as time flows toward the future, in general, the macroscopic universe does not show symmetry under time reversal.
Why do dipoles vary for different materials?
See the concept of dipoles vary for different materials. the dipoles inside it are not aligned properly but still somewhat aligned such that it shows a net magnetic effect.
Do electric dipoles feel torque in a uniform magnetic field?
A magnetic dipole will do the same in a uniform magnetic field. Both dipoles would feel a net force (not just torque) only if the external field is non uniform. Also If you draw the field lines of an electric or a magnetic dipole outside the dipole object the field lines look identical.
What is the difference between electric dipole and static field dipole?
There is a major difference in the way a static field dipole is made of. An electric dipole is made of monopole charges i.e. positive and negative charges. While they come in different shapes (electrons, protons, molecules) there is always more concentration of positive and negative charges on each pole of the the dipole.
Are electrons in motion in an electric dipole?
Electric dipoles, although similar, are not necessarily considered to be electrons in motion. A positive charge such as from a proton and a negative charge such as an electron form an electric dipole, but they are not presumed to be in motion relative to each other, while still forming electrostatic field lines of force between them.