Negative Inductance and measure of Magnetic force.

[sm0ky2]

@smOky2,

What's the definition of a Henry of Inductance?

When you store and release a magnetic field in an inductor
it is the inductors tendency to resist a change in current.


It can also be defined by flux/current for each unit time


Or
Kg m^2/s^2A^2


For this value to be (-) means you have an inversion of
electromotive force (I.e. reverse current)

[synchro1]

When you store and release a magnetic field in an inductor
it is the inductors tendency to resist a change in current.


It can also be defined by flux/current for each unit time


Or
Kg m^2/s^2A^2


For this value to be (-) means you have an inversion of
electromotive force (I.e. reverse current)

@smOky2, Citfta,

I built a copper wire coil with a variable ferrite core I showed in a video above. I positioned the core in the coil to measure zero inductance with my inductance meter. When I move the ferrite core out one centimeter, the inductance measures negative .001 mH. When I move it out two centimeters, it reads negative .002 mH. Now when I reset it to read zero, then move it in one centimeter it reads positive .001 mH and when I move it in again another centimeter it reads positive .002 mH.

Now are you two maintaining that the negative reading has no value over the positive one as a core locator? 

[sm0ky2]

About the quote:
I would have to see that in full context to know what is being said.






Your coil, when the core is inserted forms an
inductive rheostat, or variable inductor

[sm0ky2]

If you don't have another set of clip leads
You can make leads from copper wire to take a reading

[synchro1]

If you don't have another set of clip leads
You can make leads from copper wire to take a reading

@smOky2,

Why should I do a stupid job like that for you?