PQOTD
-
Physics Question of the day I've been thinking a little bit about magnetics, and can't work out the answer to a question I thought of: Is it possible to project a magnetic field? If so, how would I go about understanding the theory behind it? I've come across this web-page, but it doesn't seem to explain how it works
Between the idea And the reality Between the motion And the act Falls the Shadow
-
Physics Question of the day I've been thinking a little bit about magnetics, and can't work out the answer to a question I thought of: Is it possible to project a magnetic field? If so, how would I go about understanding the theory behind it? I've come across this web-page, but it doesn't seem to explain how it works
Between the idea And the reality Between the motion And the act Falls the Shadow
Basically any metallic object carrying some form of electricity will have a magnetic field around it. The movement of the flow of electrons through the meduim will generate the field. The stronger the flow the greater the field. If you want to test the theory maybe make a basic electro magnet ( nail wrapped up with a single long thin strand of wire ). Hook the ends of the wire up to some form of variable power supply and do the old iron filings and paper experiment. Adjust the power settings to expand and contract the field.
-
Basically any metallic object carrying some form of electricity will have a magnetic field around it. The movement of the flow of electrons through the meduim will generate the field. The stronger the flow the greater the field. If you want to test the theory maybe make a basic electro magnet ( nail wrapped up with a single long thin strand of wire ). Hook the ends of the wire up to some form of variable power supply and do the old iron filings and paper experiment. Adjust the power settings to expand and contract the field.
Thanks for the explanation. I know it's quite common to have a magnetic field around an object, but I'm interested into projecting it to another object. For example, I could be generating a magnetic field using the nail you specified, but projecting it onto another nail, giving it it's own 'copy' of the original nail's magnetic field
Between the idea And the reality Between the motion And the act Falls the Shadow
-
Thanks for the explanation. I know it's quite common to have a magnetic field around an object, but I'm interested into projecting it to another object. For example, I could be generating a magnetic field using the nail you specified, but projecting it onto another nail, giving it it's own 'copy' of the original nail's magnetic field
Between the idea And the reality Between the motion And the act Falls the Shadow
It's a long time since I did my physics A-Level but I don't think you can project a magnetic field in the way that you're describing. You can magnetise an object but you need to do that by passing it through a magnetic field which means there's so there's an element of work involved which 'projection' wouldn't provide.
It definitely isn't definatley
-
It's a long time since I did my physics A-Level but I don't think you can project a magnetic field in the way that you're describing. You can magnetise an object but you need to do that by passing it through a magnetic field which means there's so there's an element of work involved which 'projection' wouldn't provide.
It definitely isn't definatley
-
Ah, thanks. I'm beginning to wish that I had taken Physics last year now - it would certainly be a lot more interesting than my Geography A-level!
Between the idea And the reality Between the motion And the act Falls the Shadow
Watching Paint Dry or Grass Grow is more interesting than a Geographt A-Level! :)
------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC
-
Thanks for the explanation. I know it's quite common to have a magnetic field around an object, but I'm interested into projecting it to another object. For example, I could be generating a magnetic field using the nail you specified, but projecting it onto another nail, giving it it's own 'copy' of the original nail's magnetic field
Between the idea And the reality Between the motion And the act Falls the Shadow
Computafreak wrote:
it's quite common to have a magnetic field around an object, but I'm interested into projecting it to another object. For example, I could be generating a magnetic field using the nail you specified, but projecting it onto another nail, giving it it's own 'copy' of the original nail's magnetic field
I'm quite confident of the impossibility of that short of transferring the EM field to the other nail and that would require the electricity flowing in the wires around the original nail to be moved to the other nail. The only perverted way of doing something similar to what you are saying is to inflict some sort of magnetism into the intended object, either by making it a permanent magnet or temporary one for your purposes.
If the post was helpful, please vote! Current activities: Book: Devils by Fyodor Dostoyevsky Project: Hospital Automation, final stage Learning: Image analysis, LINQ Now and forever, defiant to the end. What is Multiple Sclerosis[^]?
-
Watching Paint Dry or Grass Grow is more interesting than a Geographt A-Level! :)
------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC
That's true. I've not had a single fieldwork trip this school year; two were promised. Not a good sign when there are two 15-mark questions on the exam paper on 'how would you set up a fieldwork trip?' Just to give you an idea of the pain, I've been learning about how GW is completely true, about rebranding, globalisation, natural hazards, and extreme weather. The extreme weather unit is the single part which could have been useful, and the teacher wasn't there. I wasted a quarter of a year on this subject, and a year of my life at this school
Between the idea And the reality Between the motion And the act Falls the Shadow
-
Computafreak wrote:
it's quite common to have a magnetic field around an object, but I'm interested into projecting it to another object. For example, I could be generating a magnetic field using the nail you specified, but projecting it onto another nail, giving it it's own 'copy' of the original nail's magnetic field
I'm quite confident of the impossibility of that short of transferring the EM field to the other nail and that would require the electricity flowing in the wires around the original nail to be moved to the other nail. The only perverted way of doing something similar to what you are saying is to inflict some sort of magnetism into the intended object, either by making it a permanent magnet or temporary one for your purposes.
If the post was helpful, please vote! Current activities: Book: Devils by Fyodor Dostoyevsky Project: Hospital Automation, final stage Learning: Image analysis, LINQ Now and forever, defiant to the end. What is Multiple Sclerosis[^]?
-
Computafreak wrote:
it's quite common to have a magnetic field around an object, but I'm interested into projecting it to another object. For example, I could be generating a magnetic field using the nail you specified, but projecting it onto another nail, giving it it's own 'copy' of the original nail's magnetic field
I'm quite confident of the impossibility of that short of transferring the EM field to the other nail and that would require the electricity flowing in the wires around the original nail to be moved to the other nail. The only perverted way of doing something similar to what you are saying is to inflict some sort of magnetism into the intended object, either by making it a permanent magnet or temporary one for your purposes.
If the post was helpful, please vote! Current activities: Book: Devils by Fyodor Dostoyevsky Project: Hospital Automation, final stage Learning: Image analysis, LINQ Now and forever, defiant to the end. What is Multiple Sclerosis[^]?
Couldn't you redirect the output from the nacelles through the Heisenberg Compensators to project a false Magnetic field in the Anteres Cluster? Nurse, Nurse! the pills are wearing off!
------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC
-
Thanks for the explanation. I know it's quite common to have a magnetic field around an object, but I'm interested into projecting it to another object. For example, I could be generating a magnetic field using the nail you specified, but projecting it onto another nail, giving it it's own 'copy' of the original nail's magnetic field
Between the idea And the reality Between the motion And the act Falls the Shadow
Computafreak wrote:
giving it it's own 'copy'
Would that be a shallow clone, or a deep clone? - I think you've been coding too long!
Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
Why are you using VB6? Do you hate yourself? (Christian Graus) -
Ah well. Thanks anyway. The idea of inducing a magnetic polarity onto an object sounds intriguing though - I'll look into that
Between the idea And the reality Between the motion And the act Falls the Shadow
No worries dude :) I'm only an ECE and I'm counting on the Physics I took back in my undergrad, but I'm quite confident of what I've just informed you. You might want to talk to Chris "Random Brownian Motion" Austin, Dalek "Supernova" Dave or Chris "The Fat Controller" Maunder. If I'm not mistaken, the first two have Physics for university degrees. Chris Maunder is a Physicist in disguise too.
If the post was helpful, please vote! Current activities: Book: Devils by Fyodor Dostoyevsky Project: Hospital Automation, final stage Learning: Image analysis, LINQ Now and forever, defiant to the end. What is Multiple Sclerosis[^]?
-
Couldn't you redirect the output from the nacelles through the Heisenberg Compensators to project a false Magnetic field in the Anteres Cluster? Nurse, Nurse! the pills are wearing off!
------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC
Whoa! Nurse! Frog pills, STAT! Can you back me up on what I said or refute it?
If the post was helpful, please vote! Current activities: Book: Devils by Fyodor Dostoyevsky Project: Hospital Automation, final stage Learning: Image analysis, LINQ Now and forever, defiant to the end. What is Multiple Sclerosis[^]?
-
Couldn't you redirect the output from the nacelles through the Heisenberg Compensators to project a false Magnetic field in the Anteres Cluster? Nurse, Nurse! the pills are wearing off!
------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC
Dalek Dave wrote:
Nurse, Nurse! the pills are wearing off!
100mg bigwordmedicine! Someone loosen his wallet!
Panic, Chaos, Destruction. My work here is done.
-
Computafreak wrote:
giving it it's own 'copy'
Would that be a shallow clone, or a deep clone? - I think you've been coding too long!
Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
Why are you using VB6? Do you hate yourself? (Christian Graus) -
Computafreak wrote:
project a magnetic field?
Looking at that page, I think I'd quibble with their terminology - 'project'? Nah - they're just doing the 'show the shape of a magnetic field with iron filings' thing - the magnetic field isn't projected per se, it's just a result of the varying/moving charge in the conductors they're using. It's all just E-M theory, man. Of course, Maxwell's probably spinning in his grave at that 'explanation'.
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
-
Stuart Dootson wrote:
Of course, Maxwell's probably spinning in his grave at that 'explanation'.
Hey, if we wrap him in wire and put magents on both sides of him, we can make a generator. :)
-
Computafreak wrote:
it's quite common to have a magnetic field around an object, but I'm interested into projecting it to another object. For example, I could be generating a magnetic field using the nail you specified, but projecting it onto another nail, giving it it's own 'copy' of the original nail's magnetic field
I'm quite confident of the impossibility of that short of transferring the EM field to the other nail and that would require the electricity flowing in the wires around the original nail to be moved to the other nail. The only perverted way of doing something similar to what you are saying is to inflict some sort of magnetism into the intended object, either by making it a permanent magnet or temporary one for your purposes.
If the post was helpful, please vote! Current activities: Book: Devils by Fyodor Dostoyevsky Project: Hospital Automation, final stage Learning: Image analysis, LINQ Now and forever, defiant to the end. What is Multiple Sclerosis[^]?
Mustafa Ismail Mustafa wrote:
I'm quite confident of the impossibility of that short of transferring the EM field to the other nail and that would require the electricity flowing in the wires around the original nail to be moved to the other nail. The only perverted way of doing something similar to what you are saying is to inflict some sort of magnetism into the intended object, either by making it a permanent magnet or temporary one for your purposes.
That sounds kind of like how a transformer works to me....a varying current flows in the primary coil of the transformer, with an associated varying magnetic field. That magnetic field induces a varying current in the secondary coil. Inductive charging[^] uses this principle.
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
-
Mustafa Ismail Mustafa wrote:
I'm quite confident of the impossibility of that short of transferring the EM field to the other nail and that would require the electricity flowing in the wires around the original nail to be moved to the other nail. The only perverted way of doing something similar to what you are saying is to inflict some sort of magnetism into the intended object, either by making it a permanent magnet or temporary one for your purposes.
That sounds kind of like how a transformer works to me....a varying current flows in the primary coil of the transformer, with an associated varying magnetic field. That magnetic field induces a varying current in the secondary coil. Inductive charging[^] uses this principle.
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
-
Mustafa Ismail Mustafa wrote:
I'm quite confident of the impossibility of that short of transferring the EM field to the other nail and that would require the electricity flowing in the wires around the original nail to be moved to the other nail. The only perverted way of doing something similar to what you are saying is to inflict some sort of magnetism into the intended object, either by making it a permanent magnet or temporary one for your purposes.
That sounds kind of like how a transformer works to me....a varying current flows in the primary coil of the transformer, with an associated varying magnetic field. That magnetic field induces a varying current in the secondary coil. Inductive charging[^] uses this principle.
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
Yeah, but that's not what I understood his question to mean. His idea was to "simply" translate a magnetic field from one location to the next. For a transformer to operate you need a complete circuit on the secondary coil and in addition to that, it has to be within the confines of the primary coil's magnetic field.
If the post was helpful, please vote! Current activities: Book: Devils by Fyodor Dostoyevsky Project: Hospital Automation, final stage Learning: Image analysis, LINQ Now and forever, defiant to the end. What is Multiple Sclerosis[^]?