People wishing to modify this article should do so only after familiarizing themselves with the litigation surrounding the trademark "LEVITRON", which was the s
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People wishing to modify this article should do so only after familiarizing themselves with the litigation surrounding the trademark "LEVITRON", which was the subject of a US Court of Appeals decision in 2000, Creative Gifts, Inc. v. UFO, 235 F.3d 540 (10th Cir. 2000)(New Mexico). Earlier versions of this article contained external links specifically related to the trademark litigation. Citations to non-WP:V online materials prior to 2000 will be summarily deleted.--BradPatrick 19:18, 5 May 2006 (UTC)
Yes, Bill Hones owns the name "Levitron", but for the sake of historic clarity, both name and technology existed long before Mr. Hones "discovered" either. It is highly recommended that one read "The Hidden History of the Levitron" before drawing any conclusions as to the origin of name and device.198.50.63.15 16:11, 15 May 2006 (UTC)
Keenan, henceforth I'll try to make it a point to summarize my editing in the "Edit summary" box. I'm still finding my way around the Wiki' landscape. 65.151.149.108 00:21, 24 May 2006 (UTC)
Guided by what appears to be voluminous, highly credible evidence on the subject, I've attempted to convey a sense of the richness and breadth of the Levitron story. Apparently my entries have annoyed (and perhaps distressed) some to the point of censorship. Not one to squander energy and time on the "locking of horns", I concede defeat.198.50.63.15 19:08, 25 May 2006 (UTC)
I think what he's talking about is the wholesale wiping out of information, as opposed to reasonable collaborative give and take. You can understand that can't you, "dude"? If not, then perhaps you should consider the exit. And drop the psychoanalytical bullshit; it's obviously beyond you. 198..., my apologies for speaking on your behalf. —The preceding unsigned comment was added by 65.151.167.245 (talk • contribs) .
Focus Sir. Of course said entries are converted to "history", that's precisely the point. Until you decide (or evolve the capacity) to effectively address the issues at hand (rather than parse words and evade [or simply miss] meanings), you'll remain an integral part of the Wikipedia problem, driving away the very contributors capable of making this a reference worth the reference, just as you've done presently.65.146.213.165 20:20, 26 May 2006 (UTC)
Am I going to have to start a new article, Levitating magnetic top? I really don't want to, but it looks like I'll have to if people insist that this article be only about the boring legal aspects of the trademark and not about the cool physics. Can we come to some kind of consensus here? —Keenan Pepper 19:54, 25 May 2006 (UTC)
Earnshaw's law of 1839 is based on Gauss's law. The principle behind Earnshaw's law is that no combination of inverse square law forces can lead to a stability node that would permit static levitation. Irrespective of the fact that the levitron is spinning, it is still effectively in static equilibrium for the purposes of Earnshaw's law. An equilibrium node has been reached where the upward magnetic force is cancelled out by the downward gravitational force.
Earnshaw's law cannot possibly break down because it is based on raw field theory. The only conclusion that we can draw is that the upward magnetic force is not an inverse square law force. See 'Gravity Reversal and Atomic Bonding' at http://www.wbabin.net/science/tombe6.pdf Yours sincerely, David Tombe (124.217.43.44 13:08, 6 December 2006 (UTC))
It's a known fact that when a bar magnet rotates on its north-south axis, the magnetic field does not rotate with it. The official explanation given for why the Levitron is allowed to break Earnshaw's law is that it is reacting dynamically with the magnetic field from the base. This cannot be a correct explanation. In actual fact, the spin of the levitron only serves to produce a gyroscopic stability preventing it from turning over, and it has got no bearing whatsoever on the magnetic interaction. From a purely magnetic perspective, the Levitron is to all intents and purposes in static equilibrium.
Earnshaw's law is based on Gauss's law and it states that no combination of inverse square law forces can produce static levitation. That is not original research. That is undisputed fact.
Hence, either the Levitron is breaking Earnshaw's law or else the magnetic repulsive force is not an inverse square law force. It has to be either one or the other. What would you think is most likely? I doubt if we need any citations for this. If we have two inverse square force laws and one force is greater than the other at a point in space, then it will always be greater because the two inverse square law graphs will never intersect. The two inverse square laws will be dropping off at the same rate and the greater force will always be ahead of the lesser force.
This is not original research. I am merely pointing out that the explanation for how the Levitron works is out of line with already established physics, and I am further pointing out that the raw facts leave us with only one solution. The magnetic repulsive force cannot be an inverse square law force. In other words, the Levitron really does work, and Earnshaw's law is not breached.
I should also remind those that attempt to explain the operation of the Levitron that since we are dealing with mutual repulsion, it means that the magnetic lines of force will spread outwards and away from each other between the Levitron and the base magnet. The Levitron, when levitating, will never actually get in amongst the field lines of the base magnet. Does this quote
" It depends on the fact that as the top moves sideways, away from the axis of the base magnet, the magnetic field of the base, about which the top's axis precessed, deviates slightly from the vertical. " (copied and pasted from the official Levitron website)
from the official explanation look as if this fact has been taken into consideration?
Yours sincerely, David Tombe (222.126.33.125 17:21, 6 December 2006 (UTC))
I have already read it. It doesn't change the crucial issue. If an up/down stability node exists between gravity and magnetism, then the magnetic force cannot possibly be obeying an inverse square law. That's all there is to it. Earnshaw's law is not defied. The problem lies with those who think that the magnetic force is obeying an inverse square law. David Tombe (222.126.33.125 11:34, 7 December 2006 (UTC))
You're not seriously going to let this degenerate to the depths of bickering over whether we call it Earnshaw's Law or Earnshaw's theorem, are you?
What kind of citation are you looking for? What about starting with the Wikipedia itself? Here you are,
http://en.wikipedia.org/wiki/Earnshaw's_theorem
It spells it out quite clearly. "applies to any classical inverse-square law force or combination of forces (such as magnetic, electric, and gravitational fields)"
If both the gravitational force and the magnetic force are dropping of with an inverse square law, then they will never intersect. This is form 2 mathematics. Nobody is disputing it.
The Levitron really works. The conclusion can only be that the magnetic force is falling off more steeply than the gravitational force, and hence it cannot be obeying an inverse square law.
Yours sincerely, David Tombe
The motion that you are talking about is called precession. It occurs when a torque is applied to a spinning object at right angles to its direction of spin. This precession stops the Levitron from slipping sideways. It has got no bearing whatsoever on the up/down stability. The up/down stability is purely a balance between the magnetic force and the gravitational force. This is acknowledged on the official Levitron web site. Look it up under 'The Physics of the Levitron',
http://www.levitron.com/physics.html#1
It says "It hangs where this upward repulsion balances the downward force of gravity, that is, at the point of equilibrium where the total force is zero."
Then look to the paragraph 'Why doesn't the top slip sideways?' and see for yourself that they are only involving the precession for this purpose.
What more citations do you want? I gave you a Wikipedia citation stating the fact that Earnshaw's theorem is about the fact that a combination of inverse square laws cannot produce a stability node.
Is all this a storm in a teacup because of the fact that many of those citing Earnshaw's theorem have forgotten, or never knew the meaning of its origins in Gauss's law?
I don't care whether you put my views into the main article or not. The reason that I keep replying is because I can't belive how you fail to pick up on such a very simple point. That point is, that since we do have an up/down stability node, and since Earnshaw's Theorem cannot be wrong, due to its origins in Gauss's law, then it follows that the upward magnetic force cannot possibly be obeying an inverse square law. Call it an original observation if you like. But think about it yourself. So far, your replies have completely missed the point. You picked up on a trivia about me saying Earnshaw's law instead of Earnshaw's Theorem. You asked me if I have ever seen a Levitron. I've seen the video and read the rules. That's why I'm writing in about it. You gave me a web link to read, that I had already read. You have as yet failed to state your own position. Do you believe that the magnetic force is obeying an inverse square law and that this inverse square law curve is mysteriously crossing over and intersecting with the gravitaional inverse square law curve and hence breaking Gauss's law? I'll be interested to hear your answer to that. David Tombe (222.126.33.125 19:43, 7 December 2006 (UTC))
You are obviously unaware of exactly what Earnshaw's Theorem is saying. It is saying that static levitation cannot occur where the inverse square law alone is involved.
The Levitron toy exhibits static levitation in the vertical plane. This can only mean one thing. The magnetic force of repulsion upwards must be dropping off faster than the gravitational force downwards. In other words, magnetic force cannot be an inverse square law. Earnshaw's Theorem is therefore not breached. David Tombe 15th April 2007 (61.7.158.247 15:28, 15 April 2007 (UTC))
For the poet amongst us, might I suggest: "O the panderous drivel!"? Irrespective of the wording, your message prompts me to ask: What was your intent? Was it to suggest that there is tenacious, blind-eyed clinging to an encyclopedic summation that neither feeds the intellect, nor scratches the itch of curiosity, spurred by deference, even allegiance to the purported inventor? I have my doubts as to such motive; but it does seem the topic has stagnated, even devolved, despite ample room and the clarion call for amplification and refinement. Having a particular interest in the subject, one that has impelled me to write my own (non-Wiki) account, I feel compelled to check in from time to time. I also feel compelled to ask: Why is it that any reference to the discovery, the discoverers or the evolution of spin-stabilized magnetic levitation and its embodiment is promptly relegated to the historic repository? -- This, despite solid evidence of a history that is of jolting interest and of a breadth and depth vastly greater than that of the matter of litigation, one befitting an encyclopedia on the cutting edge. I'll refrain from applying my own editing touches to the article, for obvious reasons.18:10, October 24, 2006 66.6.176.23
TgS, if you'd like to open up an e-mail dialogue, please let me know. Thanks, 66.6.176.23 01:34, 19 October 2006 (UTC)
On the litigation history:
At least 66 Westlaw citations use the referenced 10th Circuit COA ruling and I've cited this one myself. Not to minimize the toy or physics aspect (which seems to be the focus)however, anyone who deals with domain name issues or cybersquatting is affected in some way by this case. I highly recommend reading the 10th Circuit ruling - as a landmark case, it is far from dry and actually very interesting to anyone who has watched the internet develop. ttlr —The preceding unsigned comment was added by Ttlr113 (talk • contribs). 23:43, December 7, 2006 (UTC)
Re: The Simon/Heflinger article has an AAPT Copyright. Do we/can we obtain permission from the authors or the Association? 22:32, 12 January 2007 (UTC)Ttlr113
Thank you for your reply Selcarim. I want to research this further over the weekend (it's nearly 2:30 am here)and make certain the information I have is accurate before replying responsibly. There seems to be a Ritts patent for a rotating magnet that floats, but I'm having trouble with the USPTO search right now. I'm probably sensitive to the accuracy issues because I'm constantly defending WP merits to colleagues (as well as the merits of other things, but that's another topic). Thanks for your estimate of my trademark knowledge, but it was all gained the hard way through a lawsuit by a 'well known' corporation. I've also had a former client spread lies on the internet (after being sent to collections) so that touches a nerve as well. I noticed your screen name right away and think it is great (miracleS). Please check your talk page for a message (off topic). TgS —The preceding unsigned comment was added by TheGreatScott (talk • contribs). 12:24, January 13, 2007 (UTC)
Still searching for permission to publish re: AAPT Copyrighted article, anyone? Ttlr113 22:17, 14 January 2007 (UTC)
You mean the one in the references, [http://www.physics.ucla.edu/marty/levitron/ found on Dr. Martin Simon's website? It's not cool to publish such things in WP, just link it. Or by "publish" do you mean something else? --Wjbeaty 11:45, 16 January 2007 (UTC)
This one stood out, originally having been designated as an AAPT article (often an association must give permission for publication). Naturally, this does not apply here. My mistake. It is an excellent article and one can see why it was chosen as the primary reference. Ttlr113 23:51, 16 January 2007 (UTC)
(I posted the following originally in user Levitron's talk in response to someone being personally somewhat familiar with part of this controversy, and in response to user Levitron and other users who revert any mention of many publicly known facts surrounding the "development" of the Levitron): What about the U.S. patent record, and what about Congressman Driver's articles? What about the statements of physicist Martin Simon, author of the best published physics paper on the subject of the Levitron? Are you personally somewhat familiar with those? Your clear intent here, never stated, is to suppress any mention of the actual history of the Levitron's invention and development. We are scientific people; we see the dissembling in your stated arguments and reasons for suppressing this story--"Art Bell references," being one of the most laughable ones, but certainly not the only silly argument. (For anyone reading this who wonders, Hones and the Sherlocks advertised the Levitron on Art Bell's radio program. Even if this were not an insignificant detail, clearly the fact that both parties used Bell's program would make this NPOV). We would like to get into the writing of a really good physics section of the Levitron article, as well as a good accounting of its history and development. But it's hard to get past the knowledge that this article is "owned" by corporate interests who suppress facts using spurious argumentation. Here are some spurious arguments given to defend Fascinations' suppressing of the facts surrounding the origin of the Levitron: 1. The corporate interests claim it's a "conspiracy theory" every time someone mentions the Sherlocks. The answers to this argument are clear -- we should mention the Sherlocks and also mention that some people call it a conspiracy, letting the readers and contributers decide about this rather important part of the Levitron story, rather than suppressing the reference altogether. Also, references to Congressman Driver are likewise summarily deleted, along with mention of Harrigan's name, mention of the patents, and mention of many other independent facts, making the "conspiracy theory" claim ever more silly. 2. A second spurious argument given by the corporate interests for suppressing the story is that supposedly the Levitron is a TRADEMARK and does not refer to an actual invention. This argument is pernicious. It is used to "justify" narrowing the focus of the Levitron article to essentially the established outcome of the legal trademark infringement case and practically nothing else. Part of this argument has been something like "The Levitron is a TRADEMARK NAME for a KIND of levitating top, just like the Corvette is a TRADEMARK NAME for a KIND of car. You can't write about the Levitron as if it were the whole class of levitating tops." This is spurious balderdash, and reveals the dissembling and outright intellectually dishonest motive of the person originating and/or using this "argument." In the first place, anyone writing about the Corvette would be free to include the facts surrounding its development. And in the second place, the Levitron is one-of-a-kind, and does not stand in relation to its roots as the Corvette does to the car. It is unlikely that the makers of the Corvette would come on Wikipedia to claim that you can't mention the deals or principal players involved in its origin. It is likewise unlikely that they would come on Wikipedia to suppress all mention of the history of the car either. And if they did, they would be subject to the sort of reaction that you, user "Levitron," and your other personages, are receiving here. We who enjoy reading and editing this article are for the most part scientifically oriented people. Your laughable, spurious, dissembling, dishonest, and dishonorable argumentation are TRANSPARENT to intelligence higher than a dog's. It makes for a good laugh or two sometimes, and a shake of the head. Sometimes it is a little scary for some reason, and sometimes disappointing at what people will stoop to. You may succeed in forever suppressing the actual story of the Levitron on Wikipedia. I doubt it, but who knows. You seem to have the time and motivation. But you will not influence public opinion in your favor. THIS is what people think of your actions here: that by trying to suppress a story, you make it that much more interesting. Of course that mistake was made in the 90's and is merely compounded here. Rdubeau 04:23, 25 August 2007 (UTC)
The various spin-stablized levitation devices are not "Levitrons" any more than facial tissue is "Kleenex." Let's move the fully-developed toy article to "Spin stablized levitation top." That way the Levitron article can focus on the trademark, and be linked to the full article about the levitation toy.--Wjbeaty 8:00, 31 January 2007 (UTC)
With due respect to user Wjbeaty, I must disagree with your statement at beginning of this section. The Levitron is the one-and-only magnetic levitating top on the market, and its only root and its essence is Roy Harrigan's invention, by direct appropriation. The Levitron is not like a "Kleenex" (or even a "Corvette" as someone else put it). It is indeed more like the "facial tissue" or the "car" if you get what I mean. Those who insist on deleting all mention of the Levitron's one and only unique history in this article are doing damage to the article. I think we can stand up for the basic principles of free inquiry here, and write about what the Levitron is, and not just the legal maneuverings in regard to a trademark lawsuit. Rdubeau 04:50, 25 August 2007 (UTC)
After following the various discussions about this and wanting to see the Roy Harrigan aspect of Levitron's story go forward I have begun the spin stabilized magnetic levitation which as a physical phenomenon merits its own article. I encourage those who have been editing here to join me in expanding this new article. (→Netscott) 07:14, 26 March 2007 (UTC)
Rather than block three (auto-confirmed) users and have them start right back up when their blocks expire, I have elected to lock the page for a week and force you all to work it out here on the talk page. Forge an agreement and when that is done, ask for the page to be unprotected at WP:RFPP. Horologium (talk) 22:30, 18 May 2008 (UTC)
The article contains only a 'corporatised' history of the subject, contains none of the controversy about the patents, people that appear to be company shills/meat puppets keep removing referenced material, and the basic device itself is covered by another article anyway.
The material on the trademark case is dull, and does not assert any particular notability or wider significance and can be removed without any loss.
Either:
a) the article should approach NPOV and include all the information about the various patents that cover it (there are physicists that have analysed this device that are notable about the scope of the various patents).
or:
b) the article should be turned into a simple redirect to spin stabilized magnetic levitation to avoid the article to continue to be used as cheap advertising by what in my personal opinion is a pretty sleazy company. This article is like having an article called kleenex tissue; and, while kleenex is certainly a company, and for all I care Kleenex tissue may well be a trademark, I don't care, it's of no significance unless you're in the market for buying tissues, but encyclopedias aren't supposed to help sell tissues or anything, they're supposed to contain knowledge.
I don't particularly care which, but the current article is a heap of corporate spam that cannot be sustained.- (User) WolfKeeper (Talk) 00:14, 19 May 2008 (UTC)
The Levitron entry was not started by the trademark owners and only two of the products bearing the trademark are referenced in the entry. Trademarks are important intellectual property and the Levitron brand is used to sell a range of products. Just as there is a proper and improper, or legal and illegal, usage for copyrighted material, the same applies to trademarks. Trademarks are not generic and their appropriate use is not subjective. The referenced Court ruling is significant, being a Landmark Decision.
Many do have an interest in trademarks and related intellectual property, as reflected in the amount of material referenced in the Wikipedia entries for these subjects. With reference to the above Landmark Decision, Anyone in the United States who has purchased a domain name or sold a product online (using a brand name) since December 2000, is likely affected by the Court's ruling.- Fascinations (talk) 22:13, 23 May 2008 (UTC)
It seems to me that Roy Harrigans patent is the primary one. The physics papers all agree that this is the original invention. I agree that there is also a legal patent that applies to the Levitron as sold. However, I think that it's most people's assessment that this latter patent only stands because it hasn't been contested in court, but nevertherless there is legally a patent until that occurs (if ever).- (User) WolfKeeper (Talk) 13:15, 26 May 2008 (UTC)
But the fact that Roy Harrigans patent keeps being removed from the article (by editors that appear to have a COI) is clearly not NPOV; the number of external references to the Levitron that don't mention Roy's patent are few and far between.- (User) WolfKeeper (Talk) 13:15, 26 May 2008 (UTC)
Rather than continue to edit war over this, I've nominated this article for deletion per WP:COATRACK at Wikipedia:Articles for deletion/Levitron. Chris Cunningham (not at work) - talk 07:49, 11 July 2008 (UTC)
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