Are E and B Fields Always Perpendicular?

[Valayar]

Hello,

Is it always true that $$(E|B) = 0$$ ?

If the answer is "no". In which cases is it true ?

Thank you !

 

[DaTario]

Even in electromagnetic waves, as they are generated by oscillations of charges, E is not perpedicular to B. What seems to happen here is that the non perpendicular component of these fields to the direction of propagation (Poynting vector) falls more intensely than the perpendicular component. Therefore, far way, we are likely to observe just E and B perpendicular to each other and also to the direction of propagation.

If you set charges in static regime and set currents with other charges you will probably fill the space with E's and B's which are not perpendicular to one another mostly.

best wishes

DaTario

 

[charng]

Hello,

Thank you for your question! I can confirm that it is not always true that (E|B) = 0. This statement is known as the perpendicularity of electric and magnetic fields, and it refers to the fact that these two fields are always perpendicular to each other in a vacuum. However, in certain situations, this may not be the case.

For example, in a medium such as a conductor or a plasma, the electric and magnetic fields may not be perpendicular to each other. This is because these materials can interact with the fields and cause them to change direction. Additionally, in the presence of a strong gravitational field, the perpendicularity of E and B may also be affected.

In summary, while the perpendicularity of E and B is generally true in a vacuum, it may not always hold true in other situations. As scientists, it is important for us to consider all possible factors and variables when studying the behavior of electric and magnetic fields.

I hope this helps to clarify your question. Thank you for your interest in this topic!