Shape of ferrofluid
Hi Ufo,
I tried my hand at some graphics.
![](http://www.energeticforum.com/attachment.php?attachmentid=20817&d=1526442304)
Your handiwork above.
![](http://www.energeticforum.com/attachment.php?attachmentid=20818&d=1526442326)
My attempt above. I started with an FEMM from K & J Magnetics. It is a similar shaped magnet to the very large one in your picture. The magnetic field is represented by the curved lines (B field) and colored areas are potentials. You can see that the field lines are concentrated at the corners indicating the strongest area of the field (purple to dark pink). On the sides of the magnet between the pole faces, the field weakens indicated by less dense black lines and a more narrow band of pink color (indicating lower potential).
The FEMM is symmetrical about the axis. On the top side I have drawn a white rectangle representing the test tube vessel in your picture. Then I free hand painted a curved line outlining the high flux area. It is similar in shape to the outline of the ferrofluid in your picture.
I see nothing in the ferrofluid behavior contrary to classic magnetic field theory.
As for the plastic pomegranate juice bottle, nothing much there either. The magnet has strongest field at the corner of the pole faces, the shape of the bottle is confusing the issue and you can plainly see he deforms the plastic bottle to maximize the shape to fit his verbiage.
Regards,
bi
Hi Ufo,
I tried my hand at some graphics.
Your handiwork above.
My attempt above. I started with an FEMM from K & J Magnetics. It is a similar shaped magnet to the very large one in your picture. The magnetic field is represented by the curved lines (B field) and colored areas are potentials. You can see that the field lines are concentrated at the corners indicating the strongest area of the field (purple to dark pink). On the sides of the magnet between the pole faces, the field weakens indicated by less dense black lines and a more narrow band of pink color (indicating lower potential).
The FEMM is symmetrical about the axis. On the top side I have drawn a white rectangle representing the test tube vessel in your picture. Then I free hand painted a curved line outlining the high flux area. It is similar in shape to the outline of the ferrofluid in your picture.
I see nothing in the ferrofluid behavior contrary to classic magnetic field theory.
As for the plastic pomegranate juice bottle, nothing much there either. The magnet has strongest field at the corner of the pole faces, the shape of the bottle is confusing the issue and you can plainly see he deforms the plastic bottle to maximize the shape to fit his verbiage.
Regards,
bi
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