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


Bill Hobba wrote:
<guskz@xxxxxxxxxxx> wrote in message
news:1141834335.950690.17520@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

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???

Then you thought wrong - magnets also obey the inverse square law. Of
course since magnetic monopoles have never been found the fact they would
obey similar rules to charges is deduced.
<< 1742 - Thomas Le Seur and Francis Jacquier, in a note
to the edition of Newton's Principia that they publish, show that
the force law between two magnets is inverse cube. >>
http://maxwell.byu.edu/~spencerr/phys442/node4.html

Sue...


1749 - Abbe Jean-Antoine


-------------------------------------------------------------------------

Also from the same link, it makes me believe all these three forces
(Gravity, photons, charge) are the very same with the ***ONLY***
difference methaporicaly speaking is they each have a different
mass(energy)???

Then you are wrong. EM (unified by Maxwell in the 19th century) is one
field described by a 4 vector. Gravity needs a 4x4 tensor called the
metric.


Therefore could Gravity, charge, photons be virtually the same in the
same metaphorical way as light and EM waves are the same (both made of
photons).

Check out Kaluza Klein theory.


Therefore the main difference between Gravity, charge, and photons
would be the Energy(mass) that they contain.

For Gravity = mass (= energy) = density * volume,
For Charge = intensity * volume,
For Photons = intensity *volume

???

No.

Bill




.

Relevant Pages