Joule Thief 101

[MileHigh]

Webby and Brad:

You two can live in your own reality distortion field as far as I am concerned.  Resonance was explained and you can leverage that knowledge and apply it to other stuff, or do whatever it is that the two of you are doing.  I honestly find it sad to see this display of willful ignorance.

Mags:

Everything I said is true.

MileHigh

[tinman]

Webby and Brad:

You two can live in your own reality distortion field as far as I am concerned.  Resonance was explained and you can leverage that knowledge and apply it to other stuff, or do whatever it is that the two of you are doing.  I honestly find it sad to see this display of willful ignorance.

Mags:

Everything I said is true.

MileHigh

The only one living in a distorted reality MH is you.
You explained the oscillation of a wine glass at it's natural oscillating frequency.
Resonance is when that wine glass is oscillating at it's natural frequency at maximum amplitude due to an outside force acting upon it.

It is quite funny watching you nit pick on such small thing's like spelling and comers in the wrong place-or not there at all--everything has to be all so perfect.
But when you make a mistake--it's !near enough is good enough!

Well it's time you got your sh-t together ,like you think everyone else here has to---and get it! RIGHT!  No more of this !changing! English to suit MHs definition's.
Oscillation of an object at it's natural oscillating frequency is not resonance--full stop.
So your long awaited answer to your own question was wrong,as you were not describing resonance at all--you were describing the natural oscillation frequency of a wine glass.

http://www.physicsclassroom.com/class/sound/Lesson-5/Resonance
resonance - when one object vibrating at the same natural frequency of a second object forces that second object into vibrational motion.

https://en.wikipedia.org/wiki/Resonance
In physics, resonance describes when a vibrating system or external force drives another system to oscillate with greater amplitude at a specific preferential frequency.

https://en.wikibooks.org/wiki/A-level_Physics_(Advancing_Physics)/Resonance
Resonance occurs when an oscillating system is driven (made to oscillate from an outside source) at a frequency which is the same as its own natural frequency. All oscillating systems require some form of an elastic force and a mass e.g. a mass at the end of a spring. All oscillators have a natural frequency. If you have a mass on a spring, and give it an amplitude, it will resonate at a frequency:


Brad

[Farmhand]

Tinman, I don't think the system needs to be oscillate at maximum amplitude, there just needs to be some excitement of the system at a compatible frequency so that the systems "amplitude" is increased by resonance. eg. a transformer could be excited at the resonant frequency with a small amount of energy, or as much energy as could be applied, as well the exciting frequency could be a lower harmonic or something as long as the resonant rise effect is achieved.

I agree with you that there must be an input for resonance because before "resound" there must first be "sound".

I like the definition you linked below.

Cheers

https://en.wikipedia.org/wiki/Resonance
In physics, resonance describes when a vibrating system or external force drives another system to oscillate with greater amplitude at a specific preferential frequency.

Brad

[tinman]

MH

I have re-done your questions and answers so as they are correct.

How does a wine glass oscillate at it's natural !resonant! frequency, what is the mechanism?

The wine glass oscillates at it's natural !!resonant!! frequency by cycling energy back and forth between two forms, kinetic energy and potential energy.  The instant when the glass is not deformed, the glass is moving at a maximum velocity and most of the energy is stored as kinetic energy in the form of a moving mass,and some is dissipated as shock waves/sound waves and vibration.  The instant when the glass is at its maximum deformation, the glass has stopped moving and most of the energy is stored as potential energy in the form of a compressed spring.  In between these two states, the energy is stored as combination of kinetic energy and potential energy.

What determines the resonant frequency of a wine glass ?

The natural resonant frequency of a wine glass is determined by a combination of the effective moving mass of the glass and the elasticity value of the glass interacting with each other.  The higher the effective moving mass of the glass, the lower the natural resonant frequency.  The higher the elasticity value of the glass, the higher the natural resonant frequency.


Brad

[MileHigh]

Brad, you puffed out your chest about resonance two months ago and fell flat on your behind when you tried to answer the two simple questions.  The simple questions were posed to make you and others think, and now here you are ending it off with yet another failure of the imagination with your inability to separate resonance from a source of energy for the resonance.  Or perhaps it's a new 'hook' that you and Webby have latched onto in order to create yet another farcical spectacle.