Peter, whatever happened with Eric P. Dollard?

[Raui]

Kurt,
Great to see someone else helping on the equations! Dave mentioned making them more 'textbookish' as so Eric can read them, when I send Eric equations I use this LaTeX generator and he's understood every equation I've ever sent him; Online LaTeX Equation Editor - create, integrate and download

Eric,
Hope your doing well.

Raui

[Web000x]

Eric Dollard's DC Transmission Line Exercise

Eric posted a transmission line puzzle. Here is my answer

************* Original Posting ***********************

I have a D.C. transmission line, the conductors are 2 inches in diameter, spacing is 18 feet.
How many ounces of force are developed upon a 600 foot span of this line, for the following;

1. 1000 ampere line current.

2. For 1000 KV line potential?

I am waiting.

****************** My Answer **************************

The magnetic repulsion between the two conductors:

1) Calculate B

B = mu_0 H = mu_0 (I/(2*pi*r)) = (mu_0 I)/(2*pi*r) r = 18 feet = 5.48m, I = 1000A.

= (4.0e-7*pi)(1000)/(2.0*pi*5.48) = 2.0e-4/(3.14*5.48) = 11.6 uT (very small compared to terrestrial magnetism)

Calculate Force/Length

F/l = IxB = 1000A*11.6uT = 11.6 mN/meter

Calculate total for for 600' span.

l = 600' = 182.88 meter
F = 11.6 mN/meter * 182.88 meter = 2.12 N

Convert to ounces force. 1 lb = 4.45 N = 16 oz. 1 N = 3.596 oz.

F (per 600 span) = 7.62 oz. (Magnetic repulsion)


2) Calculate Electrostatic Attraction

I use the principle of virtual work with parallel plate capacitors
approximated by the 2 in diameter conductors separated by 18 feet.
I model the capacitor as a flat ribbon with 18 feet separation. The
curvature of the cylindrical conductor introduces a small error of the order
2in/18ft = 0.9%, so no problem.

E = (1/2) C V^2 = (1/2) ((epsilon A)/(d)) V^2

F = (del E / del d) = -(1/2) ((epsilon A)/(d^2)) V^2
= -(1/2) ((8.854E-12*182.88m*0.0508m)/(5.48m*5.48m)) (1.0E6V)^2

= -1.36955 N = -4.92 oz (Electrostatic attraction)

We see that reducing the current can balance mechanical forces from repulsion and
attraction. There will be a characteristic impedance associated with this balanced
system.

Balance magnitudes of attraction and repulsion

((mu I^2)/(2 pi)) (L/d) = (1/2) ((epsilon L*WireDiameter)/(d^2)) V^2

V^2/I^2 = (mu/epsilon) ((d)/(pi*WireDiameter)) = Z^2

Z = 377 sqrt(d/(pi*WireDiameter) Ohms

Enjoy

Kurt Nalty

Hey Kurt,

I've looked at most of you logic and I see something that is worth a second look. Having talked to Eric personally about the subject of "internet math", I am going to suggest that you find a way to make it more "text-book-ish" or he might have trouble deciphering it.

He told me that he would have looked this up himself but doesn't have any books left. He only wants this info (I think) so that he can give suggestions on designing a machine that has the attractive(dielectric) and repulsive forces(magnetic) cancel while generating usable power.

Dave

[KurtNalty]

Eric's DC Transmission Line

Eric Dollard's DC Transmission Line Exercise

Eric posted a transmission line puzzle. Here is my answer

************* Original Posting ***********************

I have a D.C. transmission line, the conductors are 2 inches in diameter, spacing is 18 feet.
How many ounces of force are developed upon a 600 foot span of this line, for the following;

1. 1000 ampere line current.

2. For 1000 KV line potential?

I am waiting.

****************** My Answer **************************

The magnetic repulsion between the two conductors:

1) Calculate B

B = mu_0 H = mu_0 (I/(2*pi*r)) = (mu_0 I)/(2*pi*r) r = 18 feet = 5.48m, I = 1000A.

= (4.0e-7*pi)(1000)/(2.0*pi*5.48) = 2.0e-4/(3.14*5.48) = 11.6 uT (very small compared to terrestrial magnetism)

Calculate Force/Length

F/l = IxB = 1000A*11.6uT = 11.6 mN/meter

Calculate total for for 600' span.

l = 600' = 182.88 meter
F = 11.6 mN/meter * 182.88 meter = 2.12 N

Convert to ounces force. 1 lb = 4.45 N = 16 oz. 1 N = 3.596 oz.

F (per 600 span) = 7.62 oz. (Magnetic repulsion)


2) Calculate Electrostatic Attraction

I use the principle of virtual work with parallel plate capacitors
approximated by the 2 in diameter conductors separated by 18 feet.
I model the capacitor as a flat ribbon with 18 feet separation. The
curvature of the cylindrical conductor introduces a small error of the order
2in/18ft = 0.9%, so no problem.

E = (1/2) C V^2 = (1/2) ((epsilon A)/(d)) V^2

F = (del E / del d) = -(1/2) ((epsilon A)/(d^2)) V^2
= -(1/2) ((8.854E-12*182.88m*0.0508m)/(5.48m*5.48m)) (1.0E6V)^2

= -1.36955 N = -4.92 oz (Electrostatic attraction)

We see that reducing the current can balance mechanical forces from repulsion and
attraction. There will be a characteristic impedance associated with this balanced
system.

Balance magnitudes of attraction and repulsion

((mu I^2)/(2 pi)) (L/d) = (1/2) ((epsilon L*WireDiameter)/(d^2)) V^2

V^2/I^2 = (mu/epsilon) ((d)/(pi*WireDiameter)) = Z^2

Z = 377 sqrt(d/(pi*WireDiameter) Ohms

Enjoy

Kurt Nalty

[t-rex]

[Web000x]

Eric,
I came to the same conclusion by taking the time derivative of C = i times t, divided by v
to get the resultant being a conductance so that when the capacitance is increased you get a positive conductance and when the capacitance is decreased you get a negative conductance. Same applies to a change of inductance except the equation used was L = v times t, divided by i which gave a result of resistance (v divided by i). I've attached a pdf with my working as I know you don't like text math. So really my question is - since a negative change in inductance leads to a increase in current and a negative change in capacitance leads to an increased voltage, are these increases caused by a negative resistance or conductance or is this just a mathematical coincidence?

@All,
Also I have looked high and low for a chapter in Electric Discharges, Waves and Impulses and cannot find a section on Velocity Measure but I can swear I have seen it before. I have looked in a lot of his other works and cannot find it either. Does anybody have a copy of the edition with this chapter in it?

Raui

Raui,

A couple of quotes by Eric Dollard:

This is a result of the variation of capacitance (C in Farrads) with respect to time (T in seconds) which results in a negative conductance G (in Siemens).

This is another example of synchronous parameter variation. In this case inductance (L in Henrys) time (T in seconds) gave rise to positive resistance (R in Ohms)

I'm sure you were already aware of these statements. Good eye.

Dave

[Raui]

Eric,
I came to the same conclusion by taking the time derivative of C = i times t, divided by v
to get the resultant being a conductance so that when the capacitance is increased you get a positive conductance and when the capacitance is decreased you get a negative conductance. Same applies to a change of inductance except the equation used was L = v times t, divided by i which gave a result of resistance (v divided by i). I've attached a pdf with my working as I know you don't like text math. So really my question is - since a negative change in inductance leads to a increase in current and a negative change in capacitance leads to an increased voltage, are these increases caused by a negative resistance or conductance or is this just a mathematical coincidence?

@All,
Also I have looked high and low for a chapter in Electric Discharges, Waves and Impulses and cannot find a section on Velocity Measure but I can swear I have seen it before. I have looked in a lot of his other works and cannot find it either. Does anybody have a copy of the edition with this chapter in it?

Raui

[Redisnoc]

Bump...

"one for the gipper"

[ashtweth]

HI Raui, lamare , T-rex at all.

thanks for that guys, I also got told about a lot of potential there so yes my friend your right they are going to need this crowd to "pick up the batten", i heard about all sorts of pancake cols and amazing stuff that was demonstrated over the years, i am glad you guys "have not missed the boat" with what they were demonstrating, this was the concern i was told about that people are off in other areas whilst letting Eric's stuff subside.

Ash

[t-rex]

[Raui]

I spoke to Tom B, and heard he donated 500 to Eric, (who should just open source BTW) i heard Eric is still an angry SOB thats okay we tolerate bothers with an attitude but only for so long hope he works with the open source community soon


Ash

Ash,
Concerning the open source, isn't that what Eric is doing? It may not be at any fast pace or anything but Eric is saying that our understanding of electricity is faulty and that with his understanding we can go to the next step of building a working device. Right now he is trying to give us a new understanding. Eric is more concerned that we know how electricity works than having us know how to blindly build a device and to be honest anyone serious about their researches into this area should feel the same way. Like the saying goes, you need to learn to walk before you can run.

Lamare,
I have some spare hosting space, if your interested PM me
Raui

[lamare]

I spoke to Tom B, and heard he donated 500 to Eric, (who should just open source BTW) i heard Eric is still an angry SOB thats okay we tolerate bothers with an attitude but only for so long hope he works with the open source community soon


Ash

@Ash: Eric gave me formal permission to publish his stuff:

<snip>

And finally, there is some good news. Eric gave me official permission to republish his material:

You have my official permission to publish whatever you want so long as you do not take credit for it, or do it for profit and exclude me from the returns.

What I intend to do is to release his work under more or less the creative commons non commercial license, but add a condition that allows Eric to get the returns of any work others may add to it. I have to think about this further, but the idea is that anyone is free to copy the material and improve on it freely for non-commercial purposes, but such that a printed version can be made that still includes those voluntary additions, while the returns do go to Eric.

Also see:

http://www.energeticforum.com/161118-post502.html

<snip>

Another point is how to make sure that any money that is being made with printed versions, and I would really like to see that happen, really goes to Eric and not to someone else.

My idea would be to ask the board of "Vrijschrift.org" foundation, of which I am a board member, to take care of managing any funds that result from the sale of printed versions and to make sure Eric gets his money:

<snip>

Since Vrijschrift also hosts projects that fall within the objectives, I have already asked the board if Vrijschrift would be prepared to host a site for Eric, but we have to wait what the other board members think of this idea. I hope they agree to hosting as well as to manage a fund for Eric should we get that far, because that way we can concentrate on getting the digitization work done and won't have to worry about legal issues and/or making sure Eric gets his money if they project is as succesfull as I hope it will be.

So, this is what I'm thinking about. Any comments and feedback is welcome, of course. All I want is to do the right thing for everyone, including Eric.

So far, I haven't got any reply on my request for hosting and/or fund management, so I'm afraid this will turn out to be a dead end. Maybe Panacea can do something here?

It would be nice if someone (Panacea?) could register a domain, like ericdollard.org, and provides at least some storage space. So far, I have published the (partially) digitized versions of Dollard's work at my site, using PmWiki (See a.o. Tuks DrippingPedia : Transmission Of Electricity and the side bar) , which is very flexible and a.o. supports Latex Math notation and has a module to generate a book out of some wiki pages. Since I have only 2 GB at my server, I cannot host video material, etc. But if we could host video material somewhere else and may be also move the raw document collection ( Directory contents of /pdf/Eric_Dollard_Document_Collection/ ), I think I could host the main (PmWwiki) site without any problems.

[ashtweth]

I spoke to Tom B, and heard he donated 500 to Eric, (who should just open source BTW) i heard Eric is still an angry SOB thats okay we tolerate bothers with an attitude but only for so long hope he works with the open source community soon


Ash

[Kempis]

thanks Eric for all your transmissions

[Pinwheel]

@Raui

I meant your signiture...

__________________
Scribd account; raui on Scribd | Scribd

as in people are looking to see all of EPD's stuff in one spot.

[barbosi]

Thank you, your input is always welcome.