Permanent Magnet

Dear Jon Borg
"Jon Borg" wrote in message
om...
Does a PM produce a detectable electric field ?

Does a permanent magnet accelerate electric charge at right
angles to its trajectory?

David A. Smith

"Jon Borg" wrote in message
om...
Does a PM produce a detectable electric field ?


Yes, it's called a "electro magnetic field"

"N:dlzc D:aol T:com (dlzc)" wrote in message
...
Dear Jon Borg
"Jon Borg" wrote in message
om...
Does a PM produce a detectable electric field ?

Does a permanent magnet accelerate electric charge at right angles to its
trajectory?

Do "monopole" magnets exist?

Does a PM produce a detectable electric field ?

Dear Jon Borg:

"Jon Borg" wrote in message
om...

"N:dlzc D:aol T:com (dlzc)" wrote in message
...
Dear Jon Borg
"Jon Borg" wrote in message
om...
Does a PM produce a detectable electric field ?

Does a permanent magnet accelerate electric
charge at right angles to its trajectory?

I cannot measure the potential difference in air
between any two points at 90 degrees to the
length of a permanent bar magnet.

If you move a loop of wire, does current flow?

David A. Smith

"Jon Borg" wrote in message
om...


I am looking for a static potential difference equivalent to the static
magnetic field, similar to a voltage at any two points along a conducting
coil in an electromagnet of the same strength.

A static magnetic field evidences no electric field
to an observer at rest in it.

In order to "see" an electric field about a magnet
you need to move the magnet or the observer with
respect to each other. The electric field will be
seen as a propagating electromagnetic wave.

A common voltmeter will not be able to measure the
electric potentials generated by waving a magnet
around any more than it can measure the electric
potentials of a radio wave passing by -- it's not
sensitive enough (it requires too much current to
operate).

"N:dlzc D:aol T:com (dlzc)" wrote in message
...
Dear Jon Borg
"Jon Borg" wrote in message
om...
Does a PM produce a detectable electric field ?

Does a permanent magnet accelerate electric charge at right angles to its
trajectory?

David A. Smith

I cannot measure the potential difference in air between any two points at
90 degrees to the length of a permanent bar magnet.

"Jon Borg" wrote in message
om...

"Greg Neill" wrote in message
m...
"Jon Borg" wrote in message
om...


I am looking for a static potential difference equivalent to the static
magnetic field, similar to a voltage at any two points along a conducting
coil in an electromagnet of the same strength.

A static magnetic field evidences no electric field
to an observer at rest in it.

In order to "see" an electric field about a magnet
you need to move the magnet or the observer with
respect to each other. The electric field will be
seen as a propagating electromagnetic wave.

A common voltmeter will not be able to measure the
electric potentials generated by waving a magnet
around any more than it can measure the electric
potentials of a radio wave passing by -- it's not
sensitive enough (it requires too much current to
operate).



Clearly, radio waves are dynamic and not analogous to a perceived static
field surrounding a stationary permanent magnet.

See above re no electric field for a static magnetic
field.


I am using a measuring device that has an input impedance of many hundreds
of megohms (fet OpAmp) and should be able to resolve down to around 100
microvolts. The static field I am seeing is not magnet dependent. Perhaps
this field is swamping any field produced by the magnet.

The magnet produces no electric field unless it is moving
w.r.t. the observer.

Strong radio signals in your area may induce several
microvolts depending upon the geometry, orientation,
etc., of your setup. Other capacitively coupled fields
(notably the 60Hz from house wiring) may show up. Your
meter will be unable to detect the charge from a static
electric field.

Try this: Charge a balloon to several thousand volts
of static electricity by rubbing in your hair and then
stick it to the wall. Move your meter probes around
in the air in proximity to the balloon. What are your
results?

"N:dlzc D:aol T:com (dlzc)" wrote in message
...
Dear Jon Borg:

"Jon Borg" wrote in message
om...

"N:dlzc D:aol T:com (dlzc)" wrote in message
...
Dear Jon Borg
"Jon Borg" wrote in message
om...
Does a PM produce a detectable electric field ?

Does a permanent magnet accelerate electric
charge at right angles to its trajectory?

I cannot measure the potential difference in air
between any two points at 90 degrees to the
length of a permanent bar magnet.

If you move a loop of wire, does current flow?

David A. Smith


I am looking for a static potential difference equivalent to the static
magnetic field, similar to a voltage at any two points along a conducting
coil in an electromagnet of the same strength.

"Greg Neill" wrote in message
m...
"Jon Borg" wrote in message
om...


I am looking for a static potential difference equivalent to the static
magnetic field, similar to a voltage at any two points along a conducting
coil in an electromagnet of the same strength.

A static magnetic field evidences no electric field
to an observer at rest in it.

In order to "see" an electric field about a magnet
you need to move the magnet or the observer with
respect to each other. The electric field will be
seen as a propagating electromagnetic wave.

A common voltmeter will not be able to measure the
electric potentials generated by waving a magnet
around any more than it can measure the electric
potentials of a radio wave passing by -- it's not
sensitive enough (it requires too much current to
operate).



Clearly, radio waves are dynamic and not analogous to a perceived static
field surrounding a stationary permanent magnet.

I am using a measuring device that has an input impedance of many hundreds
of megohms (fet OpAmp) and should be able to resolve down to around 100
microvolts. The static field I am seeing is not magnet dependent. Perhaps
this field is swamping any field produced by the magnet.