The earth’s magnetic field, Physics

Assignment Help:

The earth’s magnetic field:

The earth acts as a magnet and the lines of force produced by it follow the pattern shown in the diagram below.

If the Earth were completely symmetrical, the north and south magnetic poles would coincide with the axis of the Earth. The magnetic poles are, in fact, separated from the true poles by about 1000 Miles, the north magnetic pole being in the area 70 - 75 degrees North and roughly 95 degrees West.

51_earth field.png

Since the North pole of a magnet is really a North seeking pole and similarly the South pole is really a South seeking pole it follows that at the Earth's North pole there must be a south seeking magnet and similarly at the Earth's South pole there must be a North seeking magnet. Unfortunately before the significance of the Earth's magnetism was realised, navigators had dropped the word "seeking" leaving the embarrassing statement that there is a magnetic south pole at the North pole and a magnetic North pole at the South pole.


Related Discussions:- The earth’s magnetic field

define electric cell, The device which changes chemical energy into electr...

The device which changes chemical energy into electrical energy is called as electric cell. Battery is a host of constant emf but not constant current.

Define optic axis of a crystal, Q. Define: optic axis of a crystal. In...

Q. Define: optic axis of a crystal. In a double refracting crystal there is a particular direction in which both the rays travel with same velocity. This direction is called a

Uses of heat engine? , It uses in electric cooling devices, turbines .........

It uses in electric cooling devices, turbines ...........etc

Average velocity and speed, The average speed of a substance in a given int...

The average speed of a substance in a given interval of time is described as the ratio of the distance completed to the time taken while; average velocity is described as the ratio

What is intrinsic semiconductor, A pure semiconductor is known as intrinsic...

A pure semiconductor is known as intrinsic semiconductor. It has thermally formed current carriers (i)  They have four electrons in the outer part of orbit of atom and atoms are

Why ferrite core has less eddy current loss than iron core, A ferrite core ...

A ferrite core has less eddy current loss than an iron core because ferrites have (A) High resistance. (C) Low permeability. (B) Low resistance. (D) High hyster

Diamagnetism, In a non-uniform magnetic material, these substances move fro...

In a non-uniform magnetic material, these substances move from stronger parts of the field to the weaker parts.why?

Matter, trying to find out what matter stands for such as M=mass but do not...

trying to find out what matter stands for such as M=mass but do not know the other letters

Youngs modulus, filled observation of youngs modulus using searles apparatu...

filled observation of youngs modulus using searles apparatus

Explain quasi-static process and isothermal process, Explain quasi-static p...

Explain quasi-static process The process in the system the variables (PTV) alters very slowly so that the systems remain in thermal and mechanical equilibrium with its surround

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd