Electromagnetic Field  [ENDORSED]

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Perla Cervantes_1G
Posts: 22
Joined: Fri Apr 06, 2018 11:02 am

Electromagnetic Field

Postby Perla Cervantes_1G » Mon Apr 09, 2018 4:16 pm

Can someone please explain why, in the electromagnetic field, the electric field points upward while the magnetic field points rightward?

Patience Olsen 1A
Posts: 28
Joined: Fri Apr 06, 2018 11:04 am

Re: Electromagnetic Field

Postby Patience Olsen 1A » Tue Apr 10, 2018 11:39 pm

Anyone please correct me if I'm wrong but I think it's arbitrary which field points in which direction, and it's only done this way for convention. What matters is that the waves propagate at right angles to one another.

Erin Li 1K
Posts: 30
Joined: Fri Apr 06, 2018 11:03 am

Re: Electromagnetic Field

Postby Erin Li 1K » Wed Apr 11, 2018 12:11 am

I agree. I also think it's arbitrary. None of them technically point upward or to the right, it is just a matter of how they are viewed and at what angles.

Moris 1H
Posts: 33
Joined: Fri Apr 06, 2018 11:01 am

Re: Electromagnetic Field

Postby Moris 1H » Thu Apr 12, 2018 3:49 pm

It helps with how we imagine everything. There's also something called the right-hand rule that shows the positioning of these fields relative to each other.

NabilaNizam-1K
Posts: 30
Joined: Fri Apr 06, 2018 11:04 am

Re: Electromagnetic Field

Postby NabilaNizam-1K » Thu Apr 12, 2018 4:41 pm

I think the direction of the waves can be interchangeable as long as they are drawn perpendicular to each other.

Josian1A
Posts: 17
Joined: Tue Nov 14, 2017 3:00 am

Re: Electromagnetic Field  [ENDORSED]

Postby Josian1A » Fri Apr 13, 2018 3:49 pm

As other people have already said, the key takeaway is that Electric and Magnetic Fields are perpendicular, but if you wanted to learn more about why this is true you might want to look into Maxwell's Equations. I'm not sure if this course covers Maxwell, but you will learn it if you take the physics series.

Mei Blundell_1J
Posts: 32
Joined: Fri Apr 06, 2018 11:01 am
Been upvoted: 1 time

Re: Electromagnetic Field

Postby Mei Blundell_1J » Sat Apr 14, 2018 9:45 am

The E-M fields are perpendicular to each other always while they oscillate. The electric field can oscillate up and down if the magnetic field oscillates right and left. These oscillations form the light wave.

Amir Akhavan 1E
Posts: 34
Joined: Fri Apr 06, 2018 11:01 am

Re: Electromagnetic Field

Postby Amir Akhavan 1E » Sun Apr 15, 2018 12:42 pm

The direction does not matter as long as the two are perpendicular to one another.


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