Talk:Woodward effect

message: Dear Meawopp
 
Thank you for spending the time and energy to incorporate the Woodward Effect into wikipedia. A couple of suggestions...
Please mention that Jim Woodward prefers to call this effect a "Mach Effect" 
The Mach Effect does not violate the laws of conservation since it is relativistically invariant 
Jim is doing this work at the California State University at Fullerton (CSUF) 
There are some spelling typos
Best,
 
Peter Vandeventer"
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I actually performed the above edits and added the car on the freeway analogy.
Duncan Cumming
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Text amended to refer to Mach effects. Woodward effect is slang for Mach effects. Other notable researchers are also involved in Mach effects. Dr. White at NASA Houston for example. Nembo Buldrini in Europe. 
An attempt to explain Conservation of Momentum at major points in the process of producing Mach effects has been made today. Scie8 (talk) 06:05, 26 February 2013 (UTC)
replies: text: This is a good attempt, but I think general explanation about what is momentum and momentum conservation should not be written in the article, since they already have their own wikipedia entry. Now the "Debate" section is dangerously inflating with no reason, with some claims that should only appear in a "Talk" page. There are some weird comments that one founds on forums or blogs, written below references published in peer-reviewed journals. And it stays there, with no correct sources, no citations. Not even correct assumptions, being thought with rudimental newtonian mechanics whereas all the effect is relativistic and should be accounted with general relativity tools. Momentum conservation is not a problem because the Mach Effect derivation is relativistically invariant so the conservation laws are satisfied. Period. The only word important above all this is "Lorentz invariance". Citations from Woodward and other about the validity of Sciama's equation within general relativity were added. Maybe some physics specialist editor on wikipedia should come and see why all these weird unsourced claims are still present. Tokamac (talk) 18:25, 3 March 2013 (UTC)
thread_title:  Woodward Effect 

message: This entire article is dedicated to defending this effect from claims of not conserving momentum, without ever explaining what the effect is, or how its local appearance doesn't conserve momentum, how the process is built or initiated or operates, or anything.  Actual content would be nice. 134.53.26.228 23:39, 13 June 2007 (UTC)
thread_title:  Nature of effect 

message: I must say on first thoughts I don't understand how the mass variations can be brought about by using a capacitor/inductor etc. system. Sure, the mass may change from one to the other (front to back say in the system under supposed propulsion) but it then has to return from back to front...which can only be achieved via pushing on the mass, which will lead to a backward push on the system. Maybe I'm missing something here though using an electric circuit in the way described in one of the Woodward papers. Could we just use instead two big tanks filled with water, one in front and back, and then pump the water between the two to create the desired mass change? This later system would surely have the problem described above, so would not lead to a net forward force. 
It seems to me we need to induce a mass change without mass motion forward and back. Could this be achieved by what special rel tells us? Say we have 2 large discs in front and 2 in back on our ship. We spin up the back discs (in opposite directions) to relativistic speed. We then expand the ship (via pizoelectrics like Woodward, or just a simple string). This'll push the nose forward while the rear stays put ... at least that's what an outside observer would see. We then stop the rear discs and start the front discs...then contract the ship, which will pull the rear forward etc. Over and over. I don't see how spinning up and slowing the discs would create a counter force in the backward direction. Excess heat generated in the process could be ejected out the back to give us a little extra push. I'm guessing there's something wrong with this idea also, though I can't see what it is myself for the moment! ScottRShannon 05:30, 20 June 2007 (UTC)
replies: text: - I believe, that the moment we transfer energy from one end of the device to another, we also transfer mass (thanks to E=mc^2 principle)...  — Preceding unsigned comment added by 89.68.164.90 (talk) 00:19, 12 February 2013 (UTC)
thread_title:  Idea 

message: General cleanup suggested including sectioning and inline citations.  It is on my watchlist and I will eventually get to it myself, if nobody else does. Zab (talk) 05:04, 14 February 2008 (UTC)
replies: text: - I've done the suggested cleanup, please review and approve. 75.67.80.68 (talk) 15:31, 10 June 2009 (UTC)

text: I cleaned up the references from bare urls and added more inline citations. I believe that the major concerns of cleanup have been addressed and I have removed the banner. I also removed the unresolved banner from this section. We still need the review of a physicist though. Aldebaran66 (talk) 22:04, 6 February 2013 (UTC)
thread_title:  Cleanup Tag 

message: There is no rigorous description of whatever the phenomenon is supposed to be. There is only one reference to a paper. No context in the form of related work is given. Of the external links at the bottom, I was not able to access the last three; the patent application is unhelpful (patent applications are, by nature, not scientific works). The self-doubt expressed in the paragraph with the Sagan quote is… just weird. Lacking a mathematical formulation, a lucid explanation, experimental evidence, opposing viewpoints and alternative explanations ( in particular) and a sound set of references, this article (about a phenomenon that appears to violate conservation of momentum, no less!) is not really useful.
By the way, this topic is referenced in , hopefully it’ll attract somebody with the knowledge it takes to clean up the article. —xyzzyn 10:24, 15 February 2008 (UTC)
replies: text: - It doesn't violate conservation of momentum because as a physicist would know, the 'system' in this case encompasses the whole universe, so the mass fluctuations in the device allow it to take momentum from the rest of the universe preferentially, and momentum is conserved. The reaction mass is the mass of the universe. 75.67.80.68 (talk) 15:02, 10 June 2009 (UTC)
thread_title:  Some problems I see with the article 

message: This article begins with...
:"The Woodward effect is a hypothesis proposed by James F. Woodward, a physicist at California State University, Fullerton, that energy-storing ions experience transient mass fluctuations when accelerated."
Is this a leap of the author into ion-wind devices? or is Woodward publishing on this, also?
Please help me understand where Woodward mentioned ions (perhaps a later citation than his patent work).
Woodward's patents I've found (so far) are about piezoelectric transducers vibrating.  And his earlier work with vibrating capacitors was suggested (by NASA BPP) to be duplicated on a rotating toroid to eliminate false effects from vibration harmonics.
Woodward is not referring to ionized atoms of gas, but rather to the solid ions in the crystal lattice of barium titanate. Movement of these ions is responsible for energy storage in ceramic capacitors. Not to be confused with the many "ion engines" out there, some of which work in air and some in a vacuum. ~~Duncan  —Preceding unsigned comment added by 69.234.49.239 (talk) 17:19, 4 October 2010 (UTC)
replies: text: —DonEMitchell (Wikimedia.org newbie)  —Preceding unsigned comment added by DonEMitchell (talk • contribs) 16:38, 26 March 2010 (UTC)
thread_title:  From where does reference to 'ions' come? 

message: The above sentence is unfounded in the article and should be removed or modified. Plasma motor propellants, for example, have no reason to "run out".
One could say "Chemical rocket propellants will become more difficult to produce in large enough quantities for interstellar space travel". Ga2re2t (talk) 15:32, 14 June 2010 (UTC)
replies: text: I disagree. plasma motor propellants are still propellants and a spaceship that relies on them is either limited to the propellant it has when it starts out, or it must garner more propellant enroute. ϢereSpielChequers 16:31, 14 June 2010 (UTC)
replies: text: I think the OP thought the article was talking about peak oil or somesuch which is obviously not the case. By "run out", it's meant that you expell mass, and therefore at somepoint will have nothing left to expell. Think of it like a hot air balloon jettisonning ballast. 193.191.138.242 (talk) 14:36, 26 July 2010 (UTC)
thread_title:  "Rocket propellants will eventually run out" 

message: I have not been able to find any "respected theoreticians" prepared to say in print that this hypothesis is without merit. In fact, very few gravitaional physicists are prepared to say anything at all about this topic. Therefore I editied the sentence about this hypothesis being "without merit", since it gave no citation. Also, this article refers to the controversial works of a living person, so such uncited statements are against Wikipedia policy.~~Duncan
> You may also note that you'll be unable to find any "respected theoreticians" prepared to say in print that this hypothesis is *with* merit. In fact, very few physicists of any sort are prepared to say anything at all about this topic. The conclusion should not be that therefore it has merit. The conclusion should be that this topic is outside mainstream physics. Indeed, as a physicist, my strong personal opinion is that virtually every physicist who encounters this topic realises immediately that the effect is fictional. When they look at the (lacking) experimental evidence, and finally at the basic mathematical error that the adherents have been accused of, they will consider that confirmed. From wikipedia's point of view, the strong signal that should come across is that this topic is not part of mainstream physics: The effect is not *probably real* until physicists prove it wrong.H123b wiki (talk) 14:40, 17 June 2018 (UTC)
thread_title:  "Hypothesis Without Merit?" 

message: However, it has no rest mass. The thrust comes from electromagnetic waves being emitted by the device in a preferred direction. Each photon constituting this wave has a defined inertial mass equal to \frac{h}{c\lambda} and a momentum equal to \frac{h}{\lambda}. The device does provide a force, but it is not based on "action at a distance". The principle of locality is not violated.siNkarma86—Expert Sectioneer of Wikipedia86 = 19+9+14 + karma = 19+9+14 + talk 14:08, 27 March 2011 (UTC)
replies: text: Please read Woodward's work (and before, Sciama's or Barbour's work about Mach principle if you can). What you are talking about has nothing to do with Woodward effect / Mach effect propulsion. Tokamac (talk) 17:55, 3 March 2013 (UTC)
thread_title:  There certainly is propellant in this device. 

message: After listening to the show where Woodward talked about wormholes, i corrected and tried to clarify the section on Wormholes. It could even be removed entirely, since it's not directly related to the subject.  — Preceding unsigned comment added by 82.232.149.24 (talk) 21:37, 11 September 2012 (UTC)
replies: text: I have removed the Wormholes section as it is not relevant to this article in any way that I can see. Perhaps it should be included in the Wormhole article or an article about Woodward himself if one is ever created. Please add this section back if you feel it adds anything. Aldebaran66 (talk) 01:22, 1 February 2013 (UTC)
replies: text: It has a lot to do with the article. I added some explanation and correct sources. If you're interested in collaborating to this article as you seem to be, you should really read some articles cited in the "References" section (may I suggest you simply Woodward's book? I've personally ordered my copy). You would be aware that all Woodward's work for twenty-three years is not only about experiments of Mach effect thrusters (for future spacecraft engines) but also about how to theoretically create wormholes. They are not two different ideas followed separately by the author; their possible existence lay in the same formula generated by the derivation of Mach Effect equations, where creation of exotic mass is shown to be theoretically feasible, as you can see in the new entry I added to the article. Even the word "Stargates" appears in titles of Woodward articles published in peer-reviewed journals. Tokamac (talk) 18:06, 3 March 2013 (UTC)
thread_title:  Wormholes 

message: James F. Woodward: "Making Starships and Stargates - The Science of Interstellar Transport and Absurdly Benign Wormholes"   — Preceding unsigned comment added by 95.88.236.187 (talk) 01:06, 11 January 2013 (UTC)
replies: text: I added a reference to this book in the James F. Woodward article as it expounds on his theories on wormholes among other things but I haven't included a reference in this article as I don't yet see how it is directly relevant. Aldebaran66 (talk) 22:00, 6 February 2013 (UTC)
replies: text: Some references added (see my previous comment above). Tokamac (talk) 18:08, 3 March 2013 (UTC)
thread_title:  James F. Woodward - Making Starships and Stargates 

message: A number of corrections and changes have been made to provide clarity, continuity and insight into Mach effects aka Woodward effect. Where needed, additions have been made to text and references. To the extent possible, every issue cited above has been addressed although the ion issue needs further work since Mach effects (Woodward) is a relativistic mesoscopic effect. 
In order to maintain a neutral viewpoint, the subtopic Criticisms has been retitled History. Further Reading has been added with 2 entries. Consideration has been given to the fact this is not an expert topic and as a result, without the expert mathematics. Scie8 (talk) 05:28, 26 February 2013 (UTC)
thread_title:  Addressing Issues of Neutrality, Some former issues, gaps of clarity 

message: There are a lot of references lacking in this article, especially results from experiments reported in peer-reviewed papers wrote by other researchers. I'm adding some. Tokamac (talk) 17:54, 2 March 2013 (UTC)
thread_title:  Adding references 

message: I see the following issue (emphasized by me here in bold) in "Experiments" section:
* On January 20, 2006 Paul March reported experimental results at an American Institute of Physics conference. Test results were nullified due to electromagnetic interference sources.
Where does this claim originates from? Nowhere I found it on the Internet nor in the original paper, where the results were rather claimed positive. In the paper (available to anyone through download), an hypothesis is however made about the thrust being one to two orders of magnitude higher than theoretical predictions, due to the fact that the authors computed the equations with a constant rest mass density value, whereas the entire idea is about mass fluctuation.
I add a temporary [citation needed] flag on this one before reverting the sentence. I just wait a bit for the one behind 69.181.36.250, who initially wrote the original claim on 1st December 2012 at  22:31 ("Palfreyman does not consider the results conclusive since high levels of electromagnetic radiation (EMI) were present, due to the high value (8:1) of the voltage standing wave ratio (VSWR) in the matching network, and the fact that the balance used was electronic, and thus prone to spurious readings"), to let him add the correct sourced citation, if such one exists. Especially as small EMI effects are indeed cited as detected in the original publication, but that they do not overcome or null out the other results.
Tokamac (talk) 18:42, 2 March 2013 (UTC)
thread_title:  Neutrality & sources 

message: In its current form, the Woodward effect article explains that transient mass fluctuation arises in an object (a capacitor) by injecting energy into it, through "relativistic effects E = mc2". And then that this "charge mass", made heavier, is accelerated to transfer increased momentum forward, resulting in an effective thrust.
It is not the case.
This results from an incomprehension of the fundamental role played by the acceleration of the object during transient mass fluctuation. Without acceleration, a charged capacitor does not experience mass fluctuation at all. Mach effects are all about inertia, which involves acceleration. If internal energy is modified inside the object (say by charging a capacitor) no resulting mass fluctuation will arise if the object is not accelerating at the same time.
This is not explained as it should be. I'll try to add some clarification.
Tokamac (talk) 14:52, 3 March 2013 (UTC)
thread_title: "Acceleration" effect is wrongly explained throughout the article

message: Scie8, I don't see the benefit of the newer "Mach effects" section since it duplicates what have already been detailed further in "Impulse engine" then "warp drives and wormholes" sections. Now there are several sections, each talking about the impulse drive, the Alcubierre metric and the absurdly benign traversable wormhole (Kip Thorne). No need to duplicate IMHO, which lacks clarity.
I propose that the only new elements (the references to "open and closed curved space" and naming Kip Thorne) should be separated and inserted in the already existing sections, and not under this "Mach effects" section. All three (impulse engine/warp drive/wormhole) are proposals from Woodward, hence pertain to the Woodward effect. Sure they have already been investigated by other physicists, but the derivation of Sciama's equations shows the possibility of expressing negative mass. This is proposed by Woodward, and is for now called the Woodward effect. When the different effects explained by the equations are proven to be true, replicable, scalable and doable, they will perhaps be more generally renamed as "Mach effects" in the future, but it is for now only Woodward's proposal. Thus the Woodward effect. Tokamac (talk) 12:26, 17 March 2013 (UTC)
thread_title: Mach effects" section vs "Impulse engine" and "Warp drives and wormholes" sections

message: The section labelled "Terminology" is not a section usually found in an article. It just list a bunch of terms, and claims some of them are related to the topic. The normal practice is to wikilink terms such as these when they are first used in the article, and perhaps again when they are used in a section farther down. If they are wikilinked that way, they do not need to be set out in a terminology section. if they are not used in the article at all, then it seems pointless to list them. Related articles cn also be listed in a "See also" section even if they are not mentioned in the article. Accordingly, I will remove the "Terminology section to make this article more like other science articles. Edison (talk) 01:17, 17 September 2013 (UTC)
thread_title: Terminology section

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thread_title:  External links modified 

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thread_title:  External links modified (January 2018) 

message: This article gives the impression that the woodward effect is mainstream and has found acceptance within the physics community subject to future experimental confirmation. This is not the case: The woodward effect is almost completely ignored by physics, outside of an extremely small number of people researching it and, so far, failing to demonstrate it experimentally. The reason for this is that the vast majority of physicists feel certain that the effect is not real. In turn, the reason for that is that effects that violate the conservation of momentum, which this does, violate energy conservation. Let's be absolutely clear: This would enable a perpetual motion machine to be built. Furthermore, as the article suggests, deep in the undergrowth, the original reason to think the effect might be real was based on a mathematical error in basically undergraduate level maths. I think that this article should be reframed slightly to make it much more clear that this "theory" is highly speculative, bordering on pseudoscience. H123b wiki (talk) 14:16, 17 June 2018 (UTC)
replies: text: I'm not so sure that the article fails to note that the proposed effect is not accepted among mainstream, in fact the sentence which begins The effect is controversial within mainstream physics... seems to do a fairly good job of noting that the proposed effect has no experimental evidence and appears to me to underscore the fact that the proposed effect is considered fringe. Yes, it approaches the realm of pseudoscience however it fails to achieve pseudoscience since there is solid math which suggests that there could be such an effect albeit an effect so minute as to be swamped in to utter unmeasureability, ergo an effect that can not even in principle be confirmed or refuted experimentally. SoftwareThing (talk) 00:06, 26 June 2018 (UTC)
thread_title:  This article gives the erroneous impression that the woodward effect is mainstream