Re: Does a Magnet's force weaken witht the distance cube?


Sue... wrote:
guskz@xxxxxxxxxxx wrote:
http://hyperphysics.phy-astr.gsu.edu/hbase/forces/isq.html#isq


The link above shows Gravity, Light(photons), and Charge (I believe
sound waves also): all these weaken with the distance square.

How about Magnets...I think there's is the distance cube which is
strange since EM waves are made of photons and photons above weaken
with the distance square???
Yet another:
<< Figure 1: A sinusoidal current element produces large electric
fields
in the near field because of the 1/r3 term.

Note the following:

1. Both electric and magnetic fields are present.

2. The electric field contains components which vary as
1/(ßr)3, 1/(ßr)2, and 1/ ßr, where ß = (2π/λ), and the
wavelength λ= (c/f), where c is the velocity of light and f i
s the frequency.

3. The magnetic field contains components which
vary as 1/(ßr)2, and 1/ ßr.

4. The quantity (ßr) can therefore be rewritten as
http://www.conformity.com/0102reflectionseq3.gif >>

You give complex answers to simple questions...

anyhow from the above link:

It seems the magnetic force is a result of the conversion from angular
velcotiy(frequency) into linear velocity (linear travel distance) since
the equation from the above link is very similar to v = 2pi r F (or
instead of F then the wavelength as used in the above link)


<< Figure 3: The wave impedance measures the relative
strength of electric and magnetic
fields. It is a function of
***source structure.*** >>
http://www.conformity.com/0102reflections.html

Sue...

snip

.

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