Lighting led and neon with one hand

https://www.youtube.com/watch?v=aEZSCNHDYJs

Nelson Rocha

good to see your videos nelson!
im still curious for the Levitating aluminium foil.

Single-wire transmission line - Wikipedia, more background

Single-wire transmission line - Wikipedia, more background

Here is the critical quote from the Wikipedia theory section:

At much higher frequencies, however, it is possible for the return circuit (which would normally be connected through a second wire) to utilize the self- and parasitic capacitance of a large conductive object, perhaps the housing of the load itself.

WireLESS power transmission, no capacitive coupling involved:

http://www.youtube.com/watch?v=gi-hl2W86yk

Note bulb can be  _brighter_  when powered wirelessly than when connected directly to the battery powering the wireless transmitter.

Sure I would be happy to explain this to you again.  Typically high-frequency voltage travels down the single wire.  However, with no current flow you cannot transfer any AC power into the load.  So the question is how do you get current to flow when there is no apparent current loop in the circuit?  As we know, for current to flow, there must be a loop.

We also know that there exists so-called "stray" (a.k.a. parasitic) capacitance everywhere.  A capacitor is just two conducting plates separated by a distance.  Let's look at a trivial example.  Suppose you are outside in your back yard.  Let's say there is an insulating plastic lawn chair that you are sitting in and your feet are not touching the ground.  We know that the ground is conductive and there is always some moisture in the ground that helps it become more conductive.  We also know the human body is basically salty water, and so the human body is conductive.

Therefore, when you sit on an insulating plastic chair in your back yard with your feet not touching the ground we can say that there is a measurable capacitance between your body and the ground.  It may be very small, perhaps 100 pF, but it is there and it is measurable.  In reality, there is stray or parasitic capacitance everywhere.

It is this stray capacitance that allows AC current to conduct in a current loop that allows for so-called "single wire power transmission."

Here is a typical circuit current loop:

<earth ground> ---> <stray capacitor #1> ---> <high frequency AC signal generator> ---> <load> ---> <stray capacitor #2> ---> <back to earth ground>

When you do a "single wire power transmission" experiment there are typically two "invisible" stray capacitors that allow AC current to flow.  Therefore the load sees both voltage and current and therefore AC power gets transferred into the load.  Small neon lights and LEDs require very little power to light up and that's why you often see them lit in experiments like this.

This is a fairly straightforward concept that should be understood by people interested in experimenting with electronics.

I'm impressed with such detail of explanation !
Thanks,  I will apply that to my future work . I'm feel fascinating, and for sure is a  straightforward concept that i need learn .
Thanks MH for your contribution


Nelson Rocha

TK

Unfortunately I have neither the equipment nor the theoretical knowledge to calculate resonance on my own. I have replicated a device already built and described and found it provided resonance. So without the knowledge I am unable to respond. You are a Tesla fan but when you say cosmic rays are weak are you not contradicting Tesla Radiant energy patent. For that was the next experiment I wanted to do.

Is not electromagnetic coupling inferior to electric coupling as distance of coupling would be greatly reduced? Could you please give your insight on that.
Thanks

Thanks TK

You seem to be amazingly well funded  and no dispute a lot of knowledge to match it.

I had been careful with using very weak electric fields to start with. The receiver coil connected to earth lights up a fluorescent lamp or Long straight tube light of 40 watts when it is brought near the unpowered receiver coil. Without resonance this is not possible. We do not need devices or calculations to understand this.

On electric fields I think we are yet to replicate nature which provides safe healthy terahertz visible spectrum. Only if we create very high voltage and relatively lower range frequencies compared to visible spectrum we have the problems you indicated. We would need particle size receivers to be resonant with it.

Wireless electromagnetic coupling can potentially increase the risk of deadly diseases. Cancer was extremely rare in India 40 years back. We have a lot today. Situation in Countries like US is said to be far worse. Has there been safety studies on wireless electromagnetic coupling done? 

On cosmic rays I beg to differ. While you are correct in the power of them as received they can be easily amplified. Tesla's patent does not talk about the amplification part which is otherwise common sense.

I believe that there is at least one member here who possibly might have done the Daniel McFarland Cook device which is said to produce unlimited DC output. Such
Such devices if controlled properly are quite safe.

Regards

Ramaswami

Okay no takers on the self-resonant flywheel being a direct mechanical analog to the self-resonant coil.  So let's review it.

Rotational inertia is equivalent to inductance.  So it is rotational self-springiness that would be equivalent to the self-capacitance of the coil.

So how do we model that?  When you think of a flywheel, you think of a very solid disk of metal, say like a metal weight you put on a barbell.  Instead of that, let's imagine a much thinner metal disk, say something like the proportions of a cutting saw blade in a table saw.  Let's make the diameter larger also, say about one meter.

So, we are going to find the self-resonant frequency of a large and thin metal disk flywheel.  There is a certain amount of rotational springiness in that flywheel, if you put a brake on the outer edge of the flywheel and applied twisting torque on the center, the center wold twist a slight amount.

So you mount the flywheel on a shaft in a test system.  The test system can apply torque to the shaft in the form of an AC sine wave that can vary in intensity and frequency.  That is the equivalent to an external voltage source exciting the coil.

You start off by setting the applied torque on the flywheel as a one-hertz sine wave where the torque varies back and forth between a clockwise (CW) peak of 500 newton-meters and a counterclockwise (CCW) peak of 500 newton-meters.  You observe the flywheel rotating CW and then CCW at one hertz.  You also notice that the velocity of the rotating flywheel is exactly 90 degrees behind the applied torque to the flywheel, which is exactly how an inductor works for the relationship between the applied voltage and resulting current flow.  The two behave in exactly the same way.

You slowly increase the frequency of the CW + CCW torque to the flywheel and observe the flywheel rotating CW and then CCW where the velocity of the rotation is still 90 degrees behind the applied torque.  However, you notice that as you increase the frequency of the applied torque the total back-and forth angular displacement of the flywheel is decreasing.

When you apply a 200 Hz torque waveform to the flywheel, you can't even see the flywheel moving anymore.  At a 300 Hz AC torque, the flywheel appears to be perfectly still and not moving.  Apply a 400 Hz AC torque signal and the same thing, no apparent response at all from the flywheel.

But, at 497 Hz you hear a slight ringing from the flywheel but you still can't see any movement.  But all hell breaks loose at 500 Hz.  At 500 Hz you hear an incredibly loud ringing sound coming from the flywheel.  You look at the shaft and you can see the shaft is moving CW + CCW at 500 Hz.  You can see a small noticeable CW + CCW rotation at the outer edge of the flywheel.  But the most noticeable thing is the incredibly loud ringing sound filling the room.

You change the AC torque applied to the flywheel shaft to 503 Hz and you are back to hearing a slight ringing.  At 510 Hz, the shaft appears to have stopped moving and the flywheel emits no sound and it is back to looking like it is not moving at all.

So the flywheel had a self-resonant frequency of 500 Hz which was based on the rotational springiness of the flywheel interacting with the moment of inertial (rotational mass) of the flywheel.