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Question:

Explanation on why the floating mountains float in the movie avatar?

I understand that the mountains float due to a high amount of magnetic force. And this force would be strong enough to destroy any vehicles in the nearby area, and rip out the iron in blood, killing anyone as well. But what what is the actual equation or formula that a vehicle would have to have in order to keep the Vehicle from being ripped apart? And if someone could tell me what the amount of magnetic force is required to actually make the mountains levitate? I need some type of equation for the physics of this all, thanks.

Answer:

Nope. For something to pick the flow implies it the two has a decrease density than the air around, or that some mechanism exists that capture up on the pull of gravity. the former explains how warm air balloon fly, yet to have that prepare to a huge slab of rock is out of the question. The later in lots of circumstances require energetic device like engines, which at the instant are not precisely clearly happening instruments. To be in orbit demands huge velocity which could not be sustained in an atmosphere without useful source of potential, and that huge velocity quite lots could advise the item do not in basic terms carry in there, they ought to pass and *quickly*.
It is supposedly because the unobtanium mineral is a superconductor, and the mountains are magnetic. A superconductor always generates just enough magnetic field to stably levitate something magnetic. The reason is that if a magnet were to approach a superconductor at any significant speed, it would induce an infinite current. The current would then induce a sufficient magnetic field to stop the approach. The magnetic field does not need to be exceptionally large, if the mountains contain a significant amount of magnetic iron ores. The magnetic *force* to levitate a mountain is immense, but the magnetic *field* to do so is not much more than to levitate a small magnet like in classroom demonstrations. The larger quantity of magnetic material in the mountain responds more to the same magnetic field. Now if they were flying steel aircraft, such a magnetic field would tend to make their vehicles fly up uncontrollably, since pure steel will respond more to the magnetic field per unit mass than the mountains, which probably can't contain more than 25% iron. However, even today, the preferred material for aircraft is aluminum, which is not affected by magnetic fields. In the future, aircraft might even be made of advanced nonmetallic materials like carbon fiber. And no, I don't think it would rip the iron out of your blood.

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