how to use earths natural magnetic force to create a hoverboard

[projectb]

theoretically would it be possible to use earths natural magnetic forces to create a hover board?

its just for a bit of fun, but in my mind it should be theoretically possible, as long as there is a light repulsion from earths magnetic field, surely that could be enhanced ??

 

or alternatively could it be possible to revers the casimir effect again by using earths natural forces?

Surely if this can be accomplished even on a small scale, then it would almost over night eliminate the need to use fossil fuels as a use for transport.

obviously there are unlimted uses for this, but it would be a good way to start to fix the polution problem, it also opens up the doors for this technology to be used to for flight and space flight.

but ultimately i just want a hover board

[EdEarl]

 

theoretically would it be possible to use earths natural magnetic forces to create a hover board?

No. Get a compass and a refrigerator magnet.

 

1) Notice how the compass points to the north as you move the compass around.

2) Put the refrigerator magnet near the compass and notice how the compass does not always point north as you move the compass around. It always points to the refrigerator magnet.

 

Do you believe that a refrigerator magnet is powerful enough to build a hover board? I do not. Yet, the magnetic force of the refrigerator magnet is stronger than the Earth's magnetic field. Thus, the Earth's magnetic field is not strong enough to be of any assistance in an effort to build a hover board.

 

 

its just for a bit of fun, but in my mind it should be theoretically possible, as long as there is a light repulsion from earths magnetic field, surely that could be enhanced ??

Should??? The laws of Nature aren't controlled by your whim or desire. They are, and we must live with them as they are.

 

 

or alternatively could it be possible to revers the casimir effect again by using earths natural forces?

The Casimir effect is produced by metallic plates in a vacuum that are a few micrometers apart. I doubt you can breathe in a vacuum or fit between two plates a few micrometers apart. Sorry, this idea will not help.

 

 

Surely if this can be accomplished even on a small scale, then it would almost over night eliminate the need to use fossil fuels as a use for transport.

obviously there are unlimted uses for this, but it would be a good way to start to fix the polution problem, it also opens up the doors for this technology to be used to for flight and space flight.

If is about the biggest word in the dictionary. My grandmother said to me, "If wishes were horses, beggars would ride." She lived in another era, before man walked on the moon. I suppose that saying should be updated.

 

If wishes were hoverboards, beggars would ride.

 

Your desire to eliminate the use of fossil fuels is admirable, and I am with you on that one. It is unfortunate that your ideas will not work. There are some interesting ideas for getting into space without using rockets.

 

http://en.wikipedia.org/wiki/Space_elevator

http://en.wikipedia.org/wiki/Launch_loop

http://en.wikipedia.org/wiki/Lightcraft

http://en.wikipedia.org/wiki/Space_gun

http://en.wikipedia.org/wiki/StarTram

http://en.wikipedia.org/wiki/Space_fountain

http://en.wikipedia.org/wiki/SpaceShaft

 

And, Elon Musk is working to reduce or eliminate the use of fossil fuels for transportation by developing electric cars (TeslaX) and solar electricity (Solar City). In addition, he is trying to reduce the cost of space launches by 1/100th (SpaceX).

 

I hope you develop a hover board some day.

[krash661]

this is not exactly what the topic is about, but it can be relevant.

Edited July 11, 2013 by krash661

[swansont]

EdEarl is right. The earth's field is about half a gauss, which is pretty weak. There is a reason compass needles are suspended on needle points, or fine strings.

 

The Casimir effect/ Zero-point is not a source of free energy.

[Enthalpy]

It's as usual a matter of how much.

 

Earth's North pole does, as any magnet, repel a magnet with North under, and so would Earth's NS field repel a NS magnet, but...

Take 1m³ of best magnets with 1MA/m. If Earth's field drops from 40µT to 20µT over 5000km altitude, it means 10J change or 2µN, which doesn't lift 5t. No hope with superconductors neither.

 

The Casimir effect is attractive. "Repulsive" Casimir is little more than cheating with words. It can't be amplified neither, works only at really tiny distance, and we have very little action on it.

[John Cuthber]

You can't get magnets to hover

http://en.wikipedia.org/wiki/Earnshaw's_theorem

There are ways round this with diamagnetic materials, but the Earth's field isn't going to be strong enough for that trick to work.

[krash661]

 

http://www.quantumlevitation.com/

 

http://en.wikipedia.org/wiki/Magnetic_levitation

 

http://en.wikipedia.org/wiki/Electrostatic_levitation

Edited July 11, 2013 by krash661

[Enthalpy]

"Theorems" about technology and physics use to be grossly false, because we don't live in a mathematical theory.

"Proving" something impossible uses to suppose that humans be silly, which they aren't.

Often, a "proof" of impossibiilty ony proves the lack of imagination of its author.

 

Long ago, I said "Reagan's directed energy weapons will never work because of fundamental physical limits" and meanwhile they work, so I refrain from such assertions now.

 

Incidentally, Earnshaw's so-called "theorem" suppose no other action in the world. Just a gravity field (something difficult to get rid of on Earth) makes this "theorem" unapplicable, and indeed magnets float over superconductors, stably thanks to gravity. As well, an AC field provides stable positions, as in a Paul trap:

http://en.wikipedia.org/wiki/Paul_trap

 

Just for fun: my preferred "proof" of impossibility relates to captchas

http://en.wikipedia.org/wiki/CAPTCHA

which many people wanted to "demonstrate" are too difficult to hack.

 

One ingenious swindler let his robots collect captcha images from the sites he wanted to hack automatically. He had his own website to display the collected captcha images, together with pictures of pretty women who took off their clothes when human visitors of the website solved the captchas. Then the swindler's robots could insert the solutions in the sites to hack them.

 

Well done, isn't it?

[aipvplus]

i must confess i m no accustomed to value something no-functional but , then i remember it's beautiful.

i loved the identified ufo

 

i love wiki too

[John Cuthber]

"Incidentally, Earnshaw's so-called "theorem" suppose no other action in the world. Just a gravity field (something difficult to get rid of on Earth) makes this "theorem" unapplicable, and indeed magnets float over superconductors, stably thanks to gravity."

LOL

​In the absence of a gravitational field things would hover anyway.

 

Earnshaw's theory is, in fact, true. It is impossible for you to get a stable system where a magnet float in space.

Diamagnetism (with or without superconductors) require moving electrons so , as there are moving parts, it's not stable.

An AC system is also, clearly not "stable" in two sense, firstly the suspended item moves with the varying field.

Secondly, it requires the dissipation of energy.

If it was truly stable it would be a perpetual motion machine.

 

So, perhaps, before you say a theory isn't true, you should check to see what the theory applies to.

That way you won't cite counter examples which are outside its scope.

In much the same way, unless you can actually answer the original question of the thread by showing how to float a hovercraft on the Earth's magnetic field, you haven't really added much.

Edited July 13, 2013 by John Cuthber

[Enthalpy]

John Cuthber, you made the mistake.

The question was "hover over Earth", that is in a gravitation field.

You pretended to use Earnshaw's theorem, despite it does not apply because of the gravitation field.

[John Cuthber]

Really? Cool!

Can you describe the stable stationary system of magnets that hovers in the earth's gravitational field please?

Remember, no spinning, no diamagnetics, no tethers.

Just a simple diagram will do.

 

Thanks

[Enthalpy]

I have nothing to remember.

The question was "use Earth's magnetic field to hover". Nothing more.

You answered "Not stable because of Earnshaw's theorem".

You were wrong because you forgot Earth's gravity which does stabilize levitation in banal experiments.

[Ophiolite]

I think I am missing something here. Could you clarify how the Earth's gravity would stabilise levitation?

[PureGenius]

The question is interesting but the gravitational forces are too weak to produce the proper elevation of the Hoover board . Also balance would be a critical issue as far as useability , and the magnetic field fluctuates locally. If you could create a flat metallic field and make it into a electromagnet, then you would have the elevation but still not enough stability. The idea is great though and should be worked onthe frictionless applications for recreation and transportation would be very cost effective as a dramatic decrease in wear and tear on both vehicles and surface roads and skate parks etc would be immediate although the savingswould be slightly offset by the electricity to run these tracks roads although with advances in solar power production that additional cost could be minimized greatly .