# The Naked Scientists Forum

### Author Topic: H = magnetic field, B = magnetic flux dentsity...huh?  (Read 2929 times)

#### Mr Andrew

• Sr. Member
• Posts: 206
• God was primitive man's attempt at Physics.
##### H = magnetic field, B = magnetic flux dentsity...huh?
« on: 13/09/2007 00:33:43 »
I've been trying to figure out the physical meaning of H, B, D and E fields, in Electricity and Magnetism of course, and even though I have seen the equations relating them, I can't seem to discern why there are two names for the magnetic field and two for electric fields.  Can somebody help me out please.

#### lightarrow

• Neilep Level Member
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##### H = magnetic field, B = magnetic flux dentsity...huh?
« Reply #1 on: 13/09/2007 12:21:35 »
I've been trying to figure out the physical meaning of H, B, D and E fields, in Electricity and Magnetism of course, and even though I have seen the equations relating them, I can't seem to discern why there are two names for the magnetic field and two for electric fields.  Can somebody help me out please.
If you put matter inside fields, because of induction, this matter, in turn, generate other fields, which add to the previous ones. The inducing fields are D and H, the total fields are E and B.

#### Mr Andrew

• Sr. Member
• Posts: 206
• God was primitive man's attempt at Physics.
##### H = magnetic field, B = magnetic flux dentsity...huh?
« Reply #2 on: 13/09/2007 17:08:26 »
Wow, that makes so much more sense than anything I have found elsewhere.

#### lyner

• Guest
##### H = magnetic field, B = magnetic flux dentsity...huh?
« Reply #3 on: 15/09/2007 15:36:01 »
Well put, Lightarrow. You are getting to be my hero too!!!
Do you have a fan club yet?

#### lightarrow

• Neilep Level Member
• Posts: 4586
• Thanked: 7 times
##### H = magnetic field, B = magnetic flux dentsity...huh?
« Reply #4 on: 15/09/2007 18:29:07 »
Well put, Lightarrow. You are getting to be my hero too!!!
Do you have a fan club yet?
Oh! Thank you very much! I didn't expect this.

#### lyner

• Guest
##### H = magnetic field, B = magnetic flux dentsity...huh?
« Reply #5 on: 15/09/2007 22:23:23 »
Grab it while you can.
I shall be watching your every move!

#### lightarrow

• Neilep Level Member
• Posts: 4586
• Thanked: 7 times
##### H = magnetic field, B = magnetic flux dentsity...huh?
« Reply #6 on: 16/09/2007 14:35:00 »
Grab it while you can.
I shall be watching your every move!
A kiss to you.

#### The Naked Scientists Forum

##### H = magnetic field, B = magnetic flux dentsity...huh?
« Reply #6 on: 16/09/2007 14:35:00 »