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Old 08-29-2009, 06:19 PM
witsend witsend is offline
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Quotes from boguslaw.
I have been wondering for a long time why we don't see any electrical effects on metallic conductors caused by Earth rotation in it's own magnetic field.
I think you're right. If the earth's magnetic field were changing in time, then it would induce an electric field on metal inductors. So - presumably as this is not evident, then the earth's magnetic field must be relatively 'unchanging' as it relates to objects within its field.

Is Earth magnetic field rotating in the same speed as Earth rotates?
I'm sure it is, for the same reason as the explanation above. If it were moving at a different speed then it would also, relatively, be different to objects within the field and we'd see evidence in random currents generated - all over the place.

But that oscillation does not add any energy to our circuit EXCEPT for few moments. In fact it mostly helps dissipate energy by generation of EM waves, RF or heat or light whatever frequency circuit is working with.
I take it that you're pointing to the propogation of the dissipated effects through the earth's magetic fields. I can buy into this concept.

It is all because our circuits are relatively slow in generating and decaying magnetic field around.
I'm not sure that I can agree here. Unless you're pointing to the fact that magnet fields induced from current flow have an evident existence and polarity that is time based whereas the earth's fields are constantly evident. But I think the rate at which the field propogates would be consistent with the rate at which any induced field propogates. I believe our Earth's magnetic field may be an induced field. But I'm not sure.

Earth magnetic field accommodates to small magnet which is put inside it, and small magnet around circuit is slowly orientating in Earth magnetic field. Because Earth magnetic field locally is weak we can't see any measurable effects.
I'm not sure what you mean here. Are you saying that the smaller magnet is somehow shielded from the bigger Earth field? If so I agree with you. I think one magnetic field is always a shield to another - unless they somehow share their fields through space. Like one magnet attaching to another. Or a magnetic field induced in manetisable material. But the result is always a complete bipolar field inside our Earth's field.

However sometimes we are able to produce a magnetic field and immediately after that we withdraw it, MUCH faster then Earth field can fill that space again. We are creating a magnetic bubble - a place of different "magnetic pressure", then by very various methods we left it alone without powering it. So far so good, but the same way gas bubbles in mineralized water do not generate excess heat just being produced or collapsed.
I have no idea if this is right. But it's an interesting concept.

Let's now suppose that Earth magnetic field is really rotating with Earth with the same huge speed. We have now situation similar to cavitation in liquid when bubble collapse generate shock wave. Theoretically it's all because of INERTIA. Earth magnetic field is weak but have total energy huge, that total energy has momentum if moving and cannot be stopped immediately.
Again - a really interesting concept.

The effect obviously needs one important factor : circuit must produce such magnetic field which opposes Earth magnetic field or by another way create a magnetic bubble - a spherical area of nullified magnetic field, then it must stop powering it, not just slowly decay energy flow which sustain it , but really STOP as fast as possible.
I think you can safely assume that one half of all magnets will oppose our earth's magnetic field. Think about it. Our earth's fields only move from north to south. The other half of the magnetic field moves through the material of the earth - south to north. So one half of all magnets' polarities must oppose the earth's polarity.

For example a DC generator example when is switched on.The accumulation of electrons which tend to free moving on air (between contacts of switch) but stuck on conductor surface generate big magnetic bubble but once all electrons are set up to propagate current that bubble is no more powered and collapse.
Boguslaw - I can't get my head around the flow of electrons as this relates to magnetic fields. Can't comment here at all.

The character of such shock wave I imagine to be as follows: Earth magnetic field is filling that magnetic bubble with inertia causing it to not stop at the centre but accumulate.Then oscillation begin because center accumulation is acting against the still flowing inside field. In fact it can be seen like a small heart beating and enlarging it's area on each pulse, each pulse being slower.The effect around it is like two waves (scalar waves or sound like waves) - one is flowing outside and one is flowing inside .
It may very well contribute to the voltage effect. I love your analogy to a 'heart beat'.

Sharp gradient seems not to be the easiest way to generate this effect. The easiest way would be to almost entirely drop interest on electrical features of circuits and pay more attention to WHAT IS GOING AROUND the circuit. For example imagine a circuit which generates such magnetic bubble but then cut power to it but rather slowly, however before it does it , just create opposite magnetic field which effectively nullify the bubble much much faster that possible with any mosfet.Hmm... isn't that all those special coils with bifillar windings ? There is much more to investigate but MCT explains why Tesla used short DC pulses.In theory of course ....
Golly - this is really 'thinking out the box'. I definitely think it's worth exploring? How would you test the hypothesis?

Very interesting boguslaw. I definitely buy into the idea that the induced magnetic fields on our switching circuits are shielded. And, if they collapse, the question is indeed, how quickly do our Earth's fields 'fill the gap'? And what is the force of that 'filling the gap' so to speak. You should see how to set up an experiment to test this.
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