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Author Topic: is the sun an electret?  (Read 2474 times)

Offline Thebox

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is the sun an electret?
« on: 04/08/2015 23:53:15 »
''Electrets, like magnets, are dipoles. Another similarity is the radiant fields: They produce an electrostatic field (as opposed to a magnetic field) around their perimeter. When a magnet and an electret are near one another, a rather unusual phenomenon occurs: while stationary, neither has any effect on one another. However, when an electret is moved with respect to a magnetic pole, a force is felt which acts perpendicular to the magnetic field, pushing the electret along a path 90 degrees to the expected direction of 'push' as would be felt with another magnet.''

Is the sun an elecret and produces an electrostatic polarised field opposed to matters magnetic fields?


 

Offline alancalverd

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Re: is the sun an electret?
« Reply #1 on: 05/08/2015 00:04:53 »
No.
 

Offline Thebox

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Re: is the sun an electret?
« Reply #2 on: 05/08/2015 10:01:53 »
No.

Can you please explain in simple terms what an electret is then, and give some examples to clarify.?
 

Offline evan_au

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Re: is the sun an electret?
« Reply #3 on: 05/08/2015 11:41:59 »
A simple definition of an electret is given in Wikipedia (which has already been quoted in the OP). It's a good place to start.

To maintain a permanent electric dipole without injection of energy, a material must be an insulator.

However, the Sun is made of plasma, which is a very good conductor, so it cannot be an electret.

As a ball of conductive, convecting gas, the body of the Sun generates dynamic electric and magnetic fields; on longer timescales, this is visible as the Sun's roughly 11/22 year Sunspot cycle. On shorter timescales it is visible in the lifetime of an individual sunspot, solar prominence or coronal mass ejection.

The interactions of these effects is studied in the field of magnetohydrodynamics. The motion of the Sun's plasma is chaotic, and is a lot more complex than the motion of an electret in a magnetic field.
 

Offline Colin2B

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Re: is the sun an electret?
« Reply #4 on: 05/08/2015 13:40:27 »
Can you please explain in simple terms what an electret is then, and give some examples to clarify.?
Shame on you for quoting a definition but not finding out what it is. This once I will take pity.
In very simple cut down terms, think capacitor with permanent charge, just like a permanent magnet.(in reality both are never really permanent)
Often is a piece of dielectric plastic. Look up electret microphone for an eg of practical application.

Next time pretend you are researching a subject.
 

Offline Thebox

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Re: is the sun an electret?
« Reply #5 on: 05/08/2015 14:12:56 »
Can you please explain in simple terms what an electret is then, and give some examples to clarify.?
Shame on you for quoting a definition but not finding out what it is. This once I will take pity.
In very simple cut down terms, think capacitor with permanent charge, just like a permanent magnet.(in reality both are never really permanent)
Often is a piece of dielectric plastic. Look up electret microphone for an eg of practical application.

Next time pretend you are researching a subject.


I thought the definition meant the sun sorry I misunderstood what I read, is matter an electret because like a capacity it holds a permanent charge does it not?


 

Offline alancalverd

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Re: is the sun an electret?
« Reply #6 on: 05/08/2015 15:48:49 »
No.
 

Offline acsinuk

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Re: is the sun an electret?
« Reply #7 on: 06/08/2015 11:49:31 »
Our sun is the positive plate of a huge electret and all the rest of the matter comprises the balancing negative plate including planet, asteroids and gases. These spin around the positive plate due to the common magnetic field we all share
 

Offline alancalverd

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Re: is the sun an electret?
« Reply #8 on: 09/08/2015 00:28:32 »
Wrong. No evidence supports your assertion, whcih is contrary to most of the known laws of physics.
 

Offline Colin2B

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Re: is the sun an electret?
« Reply #9 on: 14/08/2015 11:02:32 »
Is the sun an elecret and produces an electrostatic polarised field opposed to matters magnetic fields?
Did you read up on electret microphone?
As AlanC says, ignore acsinuk that is totally without evidence
 

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Re: is the sun an electret?
« Reply #9 on: 14/08/2015 11:02:32 »

 

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