Questions tagged [levitation]
The levitation tag has no usage guidance.
-2
votes
0answers
12 views
Does the weight of a magnet increase when an apposite magnet is balanced above then centripetal force is applied by spinning the balanced magne [on hold]
If I have two magnets facing opposite of each and one is hoovering over the other. I then spend the top magnet will it become weightless and no longer have a force on the bottom magnet. At what speed ...
1
vote
0answers
31 views
Magnetic levitation against Earnshaw's Theorem?
Given six strong magnets, what if we fix three of them to a table in a simple, horizontal, equilateral triangle-like formation (with their north poles sticking up), and the other tree to the points of ...
-1
votes
0answers
15 views
Levitating Super Conductor - Quantum Entanglement or Electric Currents? [duplicate]
In this video (https://www.youtube.com/watch?v=zPqEEZa2Gis) the explanation given for levitation of super conductor is simple electric currents creating opposing magnetic field.
In a similar ...
0
votes
0answers
18 views
Is acoustic levitation possible with speakers?
I read that many acoustic levitation systems use ultrasonic transducers. I am thinking of making my own drivers for speakers and running them at ultrasound frequencies. Will this be able to achieve ...
1
vote
2answers
46 views
Air pressure levitation
How much mass can you levitate with air? Take air hockey table for example, pressurised air is pushed through holes and they levitate a disk but how much mass is possible?
I think it would probably ...
2
votes
1answer
100 views
Can the Earth's negative charge make negatively charged objects levitate?
Since the earth's surface has a negative charge, could it repel a large highly negatively charged body? An example is an object on stilts carrying a negative charge that is heavier than air, maybe ...
0
votes
0answers
15 views
Advice on debugging ultrasound standing wave setup
I'm trying to set up an ultrasonic standing wave powerful enough to levitate polystyrene - on a budget (i.e. nothing's quite what I'd like it to be ;)). I have not yet successfully demonstrated a ...
1
vote
2answers
125 views
If I use a magnet to levitate another magnet, where is the energy coming from?
Imagine I use one static magnet to levitate another magnet indefinitely.
This levitating magnet is in a narrow tube that wont allow it to rotate and get attracted. So it will keep levitating forever, ...
1
vote
1answer
58 views
Behavior of liquid droplet in stream of gas
Hail to all magnificent physicists from a humble chemist! :)
I'm working on an experimental setup for investigation of homogeneous nucleation and crystal growth in container-free environment. Well, ...
5
votes
2answers
2k views
Any solutions to Veritasium's hydrodynamic levitation?
So this Youtube video has been around for a while now Veritasium Hydrodynamic levitation! .
Also this Fluid Mechanics explanation of an object levitated next to an air jet may be related.
I just ...
4
votes
3answers
2k views
Can compressed air be used to make an object “float?”
Imagine a container filled with highly pressurized air. Now imagine that there is some object, maybe a marble, inside the container. Is it possible to cause the marble to "float" within mid-air, due ...
0
votes
1answer
133 views
Magnetic levitated electric wire
I'm thinking about making an instrument to show the force on a wire carrying electric current for students in lab. A normal wire which levitates from ground after it has current flowing in it.
We ...
1
vote
2answers
789 views
Halbach Array and Levitation
Full disclosure: I am a total novice when it comes to physics apart from being very curious and basic physics classes at school level. (Long long ago).
Using 16mm diameter disc magnets. I am ...
0
votes
1answer
62 views
Levitation, no levitation or instable levitation?
(forgive me any grammatical flaws, english is not my native language)
hello,
i know that according to Earnshaw's theorem a stable levitation cannot exist by only using permanent magnets.
Similar ...
0
votes
1answer
61 views
Are quantum locked things slowed down by air resistance?
Me and my friend had an argument today whether Quantum Locked objects are slowed down by air resistance? He says that it isn't, that the magnetic field or something removes the air resistance. Could ...
0
votes
1answer
167 views
Levitating Magnet Experiment [duplicate]
i want to make a levitating device with magnets.
now i have some ideas but i don't know the math to work the numbers out. here is what is want to do :
so the idea is basically to lift a device (about ...
0
votes
0answers
629 views
Magnetic Levitation
I googled and couldn't find what is the explanation of this configuration of permanent magnets and electromagnets. Does anybody can share documantation or explanation?
(https:// www.youtube.com/watch?...
1
vote
2answers
73 views
Does a field weighs something?
Imagine you put a magnet on a scale and you could manage to keep another magnet with the same pole above it. So the upper magnet is floating above the other one with a magnetic field in between. Does ...
1
vote
0answers
196 views
How does the “lifter”/ionocraft device work? [closed]
A while ago I watched a documentary which at the end (don't let the name mislead you, I'm asking about a perfectly real phenomenon) shows an experiment which its inventor calls a "lifter"/ionocraft. ...
1
vote
1answer
889 views
Could a man float in a large enough magnetic field to simulate zero gravity? [duplicate]
I know the magnetic field would need to be very large, but if an organisation like NASA with huge funding and resources could build a large enough device, could a man float in that magnetic field to ...
0
votes
1answer
5k views
How does the levitating water illusion work?
After watching a movie in which levitating water was used as an illusion, I was curious to discover how it works. Unfortunately I cannot find any great explanations of the science behind the effect, ...
3
votes
1answer
622 views
Can we use radiation pressure to push/levitate a human?
I want to know, at least in theory, are there any safe em wavelength that could affect human body as net force and do no harm?
To put it bluntly I want to know is it possible for levitate a human on ...
1
vote
2answers
468 views
Levitation inside a solenoid
Is it possible to levitate something inside a solenoid? If yes, is it possible in any direction (horizontal, vertical)? Also, is it possible when an object is traveling through?
Thanks in advance!
1
vote
1answer
407 views
Could I pick up a human with a strong enough magnet? [duplicate]
Could I pick up a human with a strong enough magnet?
Humans contain magnetic materials, such as iron.
0
votes
1answer
202 views
Is it possible to levitate large objects through diamagnetic levitation?
I am currently building a diamagnetic levitator with a strong neodymium magnet, two slabs of bismuth (a diamagnetic material), and a small neodymium cube to levitate. However, I was wondering if it ...
20
votes
4answers
8k views
Can lasers lift objects?
I have been fascinated by a very intriguing question - Can lasers push objects up?
I have done the below math to find out
Lets say we have a $1000~\text{mW}$ laser and we would like to lift an ...
0
votes
0answers
167 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 ...
-3
votes
1answer
490 views
Could Earth's magnetic field be used to lift electromagnets? [closed]
This but lifted by the Earth's magnetic field.
0
votes
2answers
113 views
Can Acoustic levitation be used to contain antimatter?
Can Acoustic levitation be used to contain antimatter?
To me, It sounds like an obvious use of the phenomenon, but I didn't find any documentation about anyone trying this on the web, which could ...
1
vote
0answers
608 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
105 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 hover-...
0
votes
0answers
222 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
2answers
128 views
Can a coil of wire levitate over another, if so how?
I have been looking at Maxwell's equations (intergral form it's easier to understand):
$$
\\\iint_{\partial\Omega}E\cdot dS = \frac{1}{\epsilon_{0}}\iiint\rho\cdot dV
\\\iint_{\partial\Omega}B\cdot dS ...
0
votes
2answers
60 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 ...
7
votes
2answers
554 views
Flywheel energy storage: Why not use room temperature diamagnets instead of superconductors?
Flywheel energy storage has garnered some interest from academia and industry for its potential to store surplus electrical energy efficiently in kinetic form.
Modern designs use magnetic bearings ...
1
vote
1answer
1k views
Repulsive Force between two Electromagnets
This question might seem a bit too basic(or advanced!), but it is the one to which I'm really desperate to find a simple enough explanation and solution.
Ok, So here's the problem,
I have two ...
0
votes
1answer
112 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 ...
1
vote
0answers
80 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 ...
3
votes
0answers
133 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 ...
1
vote
1answer
2k views
Why is the Meissner effect not used for levitation in MagLev trains?
The Meissner effect does not seem to be used as primary source of levitation in MagLev trains, instead, electromagnetic and electrodynamic syspension are mainly used. Why is this? Could it be that the ...
8
votes
2answers
3k 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 ...
2
votes
2answers
80 views
Is this a possible monopole setup, or will it cancel out? [duplicate]
Suppose you have a ball that is covered in magnets, in which the North Pole of every magnet faces outward. Is this a monopole? Or at least "functions" as a monopole? And what will happen if you placed ...
0
votes
0answers
69 views
Magnets quantum locking/levitating [duplicate]
How does cooling a magnet allow it to quantum lock/levitate? I have seen it in videos but do not know how it works.
6
votes
1answer
11k views
How much magnetic field will be required to levitate a human? [duplicate]
According to this video:
http://www.youtube.com/watch?v=BqKeiiezqzc
it should be possible to levitate humans because the water in our bodies is diamagnetic - but it is stated (at 1:14) "although ...
4
votes
0answers
198 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 ...
0
votes
2answers
64 views
What determines the alignment of an object levitating in a magnetic field?
Can you explain why sometimes (more often) a levitating object is not horizontal
and sometimes it is perfectly horizontal?
13
votes
2answers
895 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
1answer
120 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?
0
votes
2answers
379 views
Why can't we fly? [closed]
Why can't we fly?
It contradicts with our known laws of physics, but which one?
Is it possible that once we know gravity better we would be able to fly using some sort of anti-gravity machines like ...
2
votes
1answer
1k views
Magnetic levitation frog example
I'm trying to figure out the strength of the magnetic field needed to levitate the frog, assuming it's spherical, has mass $5$kg and diameter $20$cm. I also assume $\vec{B}$ is uniform. Since it's ...
