My Math Forum  

Go Back   My Math Forum > Science Forums > Physics

Physics Physics Forum


Reply
 
LinkBack Thread Tools Display Modes
February 6th, 2011, 04:37 AM   #1
Senior Member
 
Joined: Oct 2009

Posts: 895
Thanks: 1

Type the four points about how magnetic field is created

1 )) Type the four points about how magnetic field is created ?

I try ::

1 - the core solid rotate E to W
2 - the liquid above the core solid rotate W to E , w
3 - then the magnetic field is created .


2 )) Why Jupiter rotates faster than earth hence its field is more
&Venusís fieldis less

3 )) Can earth be considered as permanent magnet even though its core possess iron ore?
r-soy is offline  
 
February 6th, 2011, 05:01 AM   #2
Senior Member
 
MarkFL's Avatar
 
Joined: Jul 2010
From: St. Augustine, FL., U.S.A.'s oldest city

Posts: 12,204
Thanks: 511

Math Focus: Calculus/ODEs
Re: Type the four points about how magnetic field is created

http://en.wikipedia.org/wiki/Dynamo_theory
MarkFL is online now  
February 6th, 2011, 06:12 AM   #3
Senior Member
 
Joined: Oct 2009

Posts: 895
Thanks: 1

Re: Type the four points about how magnetic field is created

Hi MarkFl

I do not know why often give me links

I'm having trouble reading the full article because my native language is not English I best answer a clear and concise but despite that I try to open it
r-soy is offline  
February 6th, 2011, 10:15 AM   #4
Senior Member
 
MarkFL's Avatar
 
Joined: Jul 2010
From: St. Augustine, FL., U.S.A.'s oldest city

Posts: 12,204
Thanks: 511

Math Focus: Calculus/ODEs
Re: Type the four points about how magnetic field is created

For questions like these, I post links because they require a small bit of research to be done to get a clear, concise answer.

For Q3, we can say that the source of the Earth's magnetic field cannot be large masses of permanently magnetized material. The Earth does have large depostis of iron ore deep beneath its surface, but the high temperatures in the Earth's core prevent the iron from retaining any permanent magnetization.

It is considered more likely that the true source is charge-carrying convection currents in the Earth's core. Charged ions or electrons circling in the liquid interior could produce a magnetic field. There is also strong evidence to indicate that the strength of a planet's field is related to the planet's rate of rotation.

For example, Jupiter rotates faster than the Earth, and recent space probes indicate that Jupiter's magnetic field is about 10 times stronger than ours. Venus, on the other hand, rotates more slowly than the Earth, and its magnetic field is found to be weaker.
MarkFL is online now  
Reply

  My Math Forum > Science Forums > Physics

Tags
created, field, magnetic, points, type



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Charge in a magnetic field and a electrostatic problem Raphael Physics 0 May 1st, 2012 12:23 PM
Moving proton, Magnetic field, velocity, force FishFace Physics 3 October 27th, 2011 06:39 AM
How can a changing magnetic field induce an electric current r-soy Physics 1 March 7th, 2011 09:14 AM
Compare the magnetic field strength inside & outside the so r-soy Physics 1 February 18th, 2011 11:59 AM
Find the direction of the magnetic field acting on the posit r-soy Physics 0 February 7th, 2011 10:28 AM





Copyright © 2018 My Math Forum. All rights reserved.