Joule Thief 101

[MileHigh]

Here you go MH,

https://en.wikipedia.org/wiki/Stiffness

Now please note that the stiffness is a measure of force required to deform,, it is NOT the force stored and it is NOT the force returned.

The "stiffness" of an object can absorb energy and dissipate it as heat in the process of deforming,, it does not store and return energy.

Elasticity is the property of an item that is able to store and return energy from an outside stimuli.

Without elasticity there would be no spring,, it would just be an energy absorber,, a one shot deal.

Have you never bent a coat hanger back and forth repeatedly and noticed that the point where it bends gets hot??? have you not noticed that the force you put in to bend the coat hanger is not returned to you hands??

Ceramic springs,, now that is a feat,, taking something that has very little to no elasticity and creating a system that can allow a spring action to happen,,  I would think that a person who could do that might know a thing or two.

now that we have a resonant condition we can store our external stimuli within that resonance.

Here, this is from your own link:

"The stiffness, k, of a body is a measure of the resistance offered by an elastic body to deformation."

From your own link again:

<<<
Relationship to elasticity

In general, elastic modulus is not the same as stiffness. Elastic modulus is a property of the constituent material; stiffness is a property of a structure. That is, the modulus is an intensive property of the material; stiffness, on the other hand, is an extensive property of the solid body dependent on the material and the shape and boundary conditions.

https://en.wikipedia.org/wiki/Intensive_and_extensive_properties

An intensive property is a bulk property, meaning that it is a physical property of a system that does not depend on the system size or the amount of material in the system. Examples of intensive properties include temperature, T, refractive index, n, density, ρ, and hardness of an object, η (IUPAC symbols[1] are used throughout this article). When a diamond is cut, the pieces maintain their intrinsic hardness (until their size reaches a few atoms thick), so hardness is independent of the size of the system.

By contrast, an extensive property is additive for subsystems.[2] This means the system could be divided into any number of subsystems, and the extensive property measured for each subsystem; the value of the property for the system would be the sum of the property for each subsystem. For example, both the mass, m, and the volume, V, of a diamond are directly proportional to the amount that is left after cutting it from the raw mineral. Mass and volume are extensive properties, but hardness is intensive.
>>>

The wine glass is a system, and therefore the correct technical term is stiffness.

This is all from your own link.

[MileHigh]

Wrong. The glass never stops moving. At a point where the glass is at its maximum, there is no maximum because that maximum effect is transferred elsewhere on the glass rim. There is no stopping. This is not like a spring.

You are treating this like it is a pulsed coil. This is not a pulsed coil. It is a closed loop that generates it own internal harmonics and there is no stopping anything during the resonance, just the intensity of the resonance will fluctuate but never stop. Why because the energy used to resonate the glass does not stop as well.

This is just junk though. Again unrelated to coils, cores and the like.

wattsup

I am not treating it like a pulsed coil and it is not junk at all.  There are no harmonics.  It is directly related to coils, cores, and the like.  I already covered that in a posting.

[minnie]

   I think he needs to change to Wotsup?
   Someone might work it out!
             John.

[MileHigh]

Forgive my intrusion, this post sparked my curiosity.  I hope you don't mind my asking you a question.  Please assume I am ignorant (not very difficult, I am not learned), were I to comprehend the concept of an "impedance change in the system", what would I find that you feel would convince me that marveling over "energy from magnets" is a waste of time?

Regards

Erfinder, there is only so far that you can go with feeling, gut instinct and not wanting to do any measurements.  What you would find is that if you could account for all of the power in the system and where it was all going such that the magnets don't contribute so much as a nano-watt to the operating system - provided you do the measurements.  Do it again with a different system and find that you arrive at the same conclusion.  Do it again for yet another system and find that you arrive at the same conclusion.  Then the only question then is how many times you want to continue circling around in the revolving door until you have had enough.

[minnie]

   I think the resonance thingy reminds me of a brachistchrone.
   Any one remember old Frank Grimer?