Wireless energy transfer experiments ,Builders board

[stivep]

"A Goubau line or Sommerfeld-Goubau line,/ G-line, is a single wire transmission line used
to conduct radio waves at UHF and microwave frequencies. in the range between 300 megahertz (MHz) and 3 gigahertz (GHz),"
I don't think 1Mhz is anywhere near either of that.

Wesley's answer :

_{Note#1: you  can also create  two cones structure with    wire as explained in links
it will work also with magnet wire as that wire is coated with dielectric paint.}

Note#2: some of  you may have problem to identify it as Goubau  due to slightly different configuration.
but we  definitely   deal with surface wave in dielectric!!!/ metal interface.
don't be surprised   if it works also with non coated   copper  wire. Yes it will but the mechanism is exactly  the same  it will be copper/ air interface.
But if  we talking about effectiveness  of energy  transmission  than use Teflon coated wire 
_{Note#3:  it  is not much difference  if you use  1ft  wide aluminum foil or you use wire.}

_{https://overunity.com/18335/wireless-energy-transfer-experiments-builders-board/msg539175/#msg539175}
Physics tends to give separate names to the same phenomena based on convenience of pointing at  given area of it.
Example: light is electromagnetic wave and is part  of  electromagnetic spectrum but it is made from visible light, infrared ,ultraviolet.
It is convenient to use distinctive name for the type of  surface wave  at low frequencies and  this is  e.g  Zenneck Wave.
The  reflecting and propagating   properties of Zenneck Wave are specific  and  unique to that particular range  of electromagnetic surface  wave phenomena.

Why does an AC circuit NEED a completed path? .

The simplest answer:
if  there  is  no  current flow, there is no  rate of change and energy dissipation.For these who wants to have massage of your brain  the controversy is discussed here:
https://physics.stackexchange.com/questions/74625/does-alternating-current-ac-require-a-complete-circuit
Remaining  unanswered part of comment of user:d3x0r was formulated not in condensed, precise and concise form having logical unity.
Logical  Unity: logical unit of Logical  Unity is a unique connection to an application program  or to logically precise answer.
Another  words:  logically precise answer is possible due  to very narrow and highly  precise and direct question not  bouncing around and not being reflected.
Physics has no emotions, feelings,and is apolitical .
Wesley

[stivep]

all messages  described in post 
https://overunity.com/18335/wireless-energy-transfer-experiments-builders-board/msg539104/#msg539104
are approved
Wesley

[d3x0r]

Current can flow in an open wire... it's only a small current due to the capacitance of the metal itself.


This calculator has no dependancy on insulation type, air being as good as teflon, because it's not between the metal and dialectric, but just of the metal itself, when calculating the capcitance of a length of wire.

or this one to calculate the capcitance of a mass of meterial, given

Capacitance, C = n X F/M X V
Capacity = n X F/M X 3.6
Where, n is number of electron transfer, F is Faraday Constant, M is Molar mass, V is applied potential.

which then means a sphere of metal, varnished or naked (as used in most telsa coils) is the same capictance.  It may be true that a varnished body of metal will hold a higher voltage, and be effecitvely more capacitance... but it's not really changing the capictance, just the ability to store more charge in the same capcitor.

---

so, again, I can have quite a current flowing in a coil with two mass-capcitances (say a 3x3x3 block of aluminum at each end, similar to what stiffler was using on his stuff)  and an inductor between it with an entirely open circuit; can store lots of energy in the resonant tank... and just need ANOTHER coil around it to extract energy from it.

While playing with toroidal(mobius wound) coils, I had lots of power transfered to the load, with the end of the coils connected to the load entirely open, and the windings themselves had very little internal/parasitic capacitance.  Attaching the other end to ground gave more electrons available.... but then it was

ground-> coil -> LED-load -> coil ->ground  (two different filaments on the same coil)
and once I had it started that way, I could just remove the ground and leave the ends of the coils tied together, and there was enough electrons in the circuit to continue; but it would not re-start in that configuration... and ends up back at a closed circuit, which is diverging from the original point that the open circuit without the grounds also worked.

coil -> LED-load ->coil  (two different filaments on the same coil, with less than pico-farads of coupling between them... that is there's more capcitance in the wire than is shared between the two filaments.)



--
Edit: I've been on vacation for the past month, and a couple more weeks, when I get back home I'll do a more meaningful build along the lines of the topic.

[decogsm]

The real 100%  Tesla Wireless Power Transmission can be found here:

http://www.tamaseduard.com/DOWNLOAD/file/T.E.L.T.mp4

http://www.TamasEduard.com

https://www.youtube.com/watch?v=AMK0B9ljNrc

[stivep]

Current can flow in an open wire... it's only a small current due to the capacitance of the metal itself.

That is correct the higher  the voltage  the lower the current =  power
That compared   to  safety standard:

International ICNIRP safety standards for RF current in the body in the Tesla coil frequency range of 0.1 - 1 MHz specify a maximum current density of 0.2 mA
per square centimeter and a maximum power absorption rate (SAR) in tissue of 4 W/kg in limbs and 0.8 W/kg average over the body.
https://en.wikipedia.org/wiki/Tesla_coil

However trick  is in understanding  of  the  phenomena:
trick #1:
Line voltage is the voltage seen on the AC line, typically single phase. Line current is the current that results when that voltage is applied to a load.
http://www.engineering.com/Ask@/qactid/1/qaqid/1286.aspx
trick#2
is to understand this:
Capturing Surface Electromagnetic Energy into a DC through Single-Conductor Transmission Line at Microwave Frequencies
http://jpier.org/PIERM/pierm54/04.16120207.pdf

Think ABOUT  signal in the wire  or  rather dielectric covering that wire - between two Tesla coils, -  as surface wave.
Remember that surface wave existing in the  interface is that what we focus our-self at.
Than read  here:

Physics tends to give separate names to the same phenomena based on convenience of pointing at  given area of it.
Example: light is electromagnetic wave and is part  of  electromagnetic spectrum but it is made from visible light, infrared ,ultraviolet.
It is convenient to use distinctive name for the type of  surface wave  at low frequencies and  this is  e.g  Zenneck Wave.
The  reflecting and propagating   properties of Zenneck Wave are specific  and  unique to that particular range  of electromagnetic surface  wave phenomena.

https://overunity.com/18335/wireless-energy-transfer-experiments-builders-board/msg539218/#msg539218
conclusion:
Even if we mistakenly  identified phenomena (by its  very much  unique name) in the  wire( transmission line) between Tx Tesla coil and Rx Tesla coil having load,
we are always  dealing with EM wave  and  that particular EM wave does   not change  its behavior when compared to  Zenneck wave
Frequency of operation  can be in kHz  too  (means : not in  MHz  and GHz)
Our wire can be replaced with  aluminum foil 1ft wide and infinitely  long  and - it will behave the same way , however
the role of dielectric covering the wire in our Goubau  line is now  taken  by  air  as dielectric   creating  interface with  surface  of that foil.
By its  very much  unique name  it will no longer be  named  Goubau  line it will be named Zenneck wave in the interface
if frequency is low.

_{Note : the missing  two  cones  of original Goubau line creates confusion to some of you. That can be explained by small diameter of wire in Goubau line but it is not important  here so I leave it as
it is.}


Wesley