Magnetic field lines directed?

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Discussion Overview

The discussion revolves around the possibility of directing or confining magnetic field lines to resemble a laser-like shape. Participants explore various configurations of magnets and solenoids to achieve a concentrated magnetic field, including the use of neodymium cones and solenoids with iron cores.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the feasibility of shaping magnetic field lines like a laser and suggests using neodymium cones, but expresses concerns about their pull strength.
  • Another participant mentions that a long solenoid has parallel field lines and questions the specific goals of the original inquiry.
  • A participant proposes wrapping a solenoid around a cone to amplify the magnetic pull and asks about the influence of electric fields on magnets.
  • Some participants suggest that using two cone-shaped magnets with opposite magnetization could concentrate the field near a point.
  • There is a mention of the potential to create a strong magnetic field using large solenoids with an iron core, but uncertainty exists regarding the required field strength and its practical implications.

Areas of Agreement / Disagreement

Participants express various ideas and hypotheses about directing magnetic fields, but no consensus is reached on the best approach or the feasibility of achieving the desired magnetic field configuration.

Contextual Notes

Participants acknowledge limitations in their understanding of the required magnetic field strength and its applications, which may affect the proposed solutions.

cn_2149
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Is it possible to direct or confine field lines to be shaped like a laser? I know there are magnets such as neodymium cones that direct field lines through the tip but they don't seem to have the amount of pull as I'm looking for. If there isn't, is there anyway to amplify the power? Maybe align multiple cones in a certain pattern so as to concentrate all of the lines to a point?

p.s. I'm a sophomore in AP Physics 1 and we have yet to go over magnetism. My apologies if I sound really dumb!
 
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Can you be more specific about what you are trying to accomplish? Technically, a very long solenoid has parallel field lines within it and near the ends.
 
To put it bluntly, I want to create a very powerful magnet that will direct most, if not all, of the field lines to a point. Like a laser. Could wrapping a solenoid around a cone help amplify the pull of the magnet? Also, how would the electric field affect the magnet? Thanks for the reply!
 
cn_2149 said:
To put it bluntly, I want to create a very powerful magnet that will direct most, if not all, of the field lines to a point.
If you have two cone shaped magnets with opposite magnetization, then it is possible to concentrate the field near a point as in the image below.
vOGyu.jpg

I suppose a strong field could be created using two large solenoids with an iron core which has a pointed edge on one side.

The problem is that I have no idea how strong of a magnetic field you need since I don't know what this is for. Getting a field strength of even half a Tesla will likely require a magnet the size of a refrigerator.
 

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NFuller said:
If you have two cone shaped magnets with opposite magnetization, then it is possible to concentrate the field near a point as in the image below.
View attachment 219084
I suppose a strong field could be created using two large solenoids with an iron core which has a pointed edge on one side.

The problem is that I have no idea how strong of a magnetic field you need since I don't know what this is for. Getting a field strength of even half a Tesla will likely require a magnet the size of a refrigerator.
Geez. Thanks for the help, I guess I'll have to try some stuff out!
 

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