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9
votes
2answers
320 views

What is the exact physics behind sonic levitation

Me and a group of friends decided to choose sonic levitation as our research topic. However, after looking up the theoretical background, we hit a roadblock: (Here is an image of a standing sound ...
0
votes
2answers
51 views

Can an Adequately Long Tube Float?

I was just pondering in my head one day (I don't recall what I was pondering), but I came across the thought: If an adequately long (and light) tube is placed in the atmosphere, can the difference in ...
5
votes
1answer
877 views

Magnetic Levitation : Confusion with Lenz's Law

Considering the above diagram, I am failing to see why the aluminium ring floats upwards rather than oscillates. I understand Faraday's law, but I am struggling with Lenz's law - as there is an ...
0
votes
1answer
81 views

How does the hendo hoverboard achieve omni-directional movement?

An older thread already gave away the wonderful details of how the Hendo hoverboard achieves levitation, but how does it achieve its form of omni-directional control and movement? My idea was that ...
0
votes
1answer
88 views

Hendo Hoverboard

What if the Hendo hoverboard had a magnetic surface connected to it under the engines so that the current could always be occurring, would it then be free to float over anything?
3
votes
0answers
75 views

Lifting capacity of superconductors

How does the strength of the magnetic field the superconductor is exposed to affect its ability to levitate/lock heavier objects? Or is there no relationship (for superconductors) between magnetic ...
2
votes
0answers
82 views

Why does this 'Quantum Pinned' superconductor allow easy repositioning

I'm confused by videos such as this (popular demonstration of 'Quantum Levitation'): https://www.youtube.com/watch?v=Ws6AAhTw7RA So my current understanding of superconductors is that when in the ...
2
votes
0answers
124 views

Bottom magnetic levitation

There are many decorative devices, that keep a small metal sphere levitating in air by attracting it to a top electromagnetic coil while monitoring their height by optical sensors. There is also the ...
1
vote
0answers
44 views

Magnets levitation stability

I'm willing to make a levitating stand based on standard magnets. Both the stand itself and the levitating object would have magnets attached, of course the same poles heading each other. I have two ...
1
vote
0answers
35 views

Superconductors and hoverboards

We know that superconductors are repelled by magnetic fields. The earth has a magnetic field of about $10^{-5}$ Tesla. I just want to know if it is possible to use this property of earth to make ...
1
vote
0answers
45 views

Question about Meissner Effect video

In this video, what material is on top of the superconductor disk that keeping it cold? Is it just a circular chunk of dry ice? http://www.youtube.com/watch?v=Ws6AAhTw7RA I'm planning on recreating ...
1
vote
0answers
207 views

Remotely changing superconductor levitation height?

I want to be able to modify the height of a quantum locked superconductor. My original plan was to levitate the superconductor over an electromagnet and modify the current to said magnet (increase the ...
0
votes
0answers
15 views

Easiest way to levitate a ferromagnetic material that is not a permanent magnet?

I want to levitate an iron cube that is not a polarized permanent magnet. What is the easiest way to do this?
0
votes
0answers
15 views

Can a diamagnetic levitator levitate non-permanent ferromagnetic materials?

I am building a diamagnetic levitator that will eventually levitate a small neodymium cube. However, is it also possible for an iron cube to be levitated as well? I know that diamagnetic materials ...
0
votes
0answers
13 views

How much damping is there being exerted on a vertically stable magnet moving across a superconductor surface?

I'm thinking of a flat magnet with opposite poles on the wide ends, though perhaps some other arrangement is more stable. Assuming such a magnet is levitating in a completely stable state and is ...
0
votes
0answers
25 views

Stabilizing a shaft with only one electromagnet

I have recently come across Earnshaw's theorem in my research which states that it is not possible to stabilize an object using only static permanent magnets. I understand that and it makes sense to ...
0
votes
0answers
18 views

does thickness of a diamagnetic material affect the mag-lev effect?

I built a little mag-lev display, basically a desk ornament, as a fun project/learning experiment. It's a fairly basic setup with a neodymium magnet suspended between two thin sheets of pyrolytic ...
0
votes
0answers
32 views

Quantum levitation - Real Load Weight

Can you please try to tell if it's real to create a device based on Quantum levitation that can hold adult person a few centimeters above ground. I'm curios because everywhere we see the super ...
0
votes
0answers
24 views

Why does a magnet rise up from the surface of a superconductor after the superconductor reaches critical temperature?

From my current understanding, when a magnet is placed above a superconductor below Tc, it hovers due to the Miessner Effect (total exclusion of magnetic fields from within the superconductor) due to ...
0
votes
0answers
33 views

Superconducting condensation energy from diamagnetic levitation

Suppose you had a classic setup in which a magnet is held over above a high-temperature superconductor which is then cooled down to its critical temperature so that it starts to superconduct and the ...
0
votes
0answers
33 views

Diamagnetic Sphere Moving through Solenoid

I've seen the videos of frogs being levitated due to diamagnetism. What happens if the frog (or another diamagnetic object) enters a solenoid with an initial velocity? Specifically, consider a ...
0
votes
0answers
28 views

Quantum Locking Inverted

I have recently been investigating the phenomenon known as "quantum locking". I have many questions about the engineering aspects of this phenomenon such as what range it operates, what shapes can be ...