Magnetic Levitation

  • #1
Hi everyone, I'm a student who is currently majoring in product design. Therefore, pardon me for not having any physics knowledge but I'm really appreciate for your help ! I wanted to come out with a fragrance dispenser by using magnetic levitation. I've watched a lots of videos but I don't really understand the process of making.

Based on my understanding, all i need to do is put a huge magnet at the bottom then for the levitating part use a small magnet which is in a opposite pole.

So, my questions:
1. Can I use a random magnet ? Or is it the must to use the round huge magnet with a hole in the middle.
2. I found a product which is known as "FLYTE" can anyone explain to me how does the designer created the levitating effect ? If possible can someone please draw an exploded view for this product ? Here's the link of the product https://flyte.se/
 

Answers and Replies

  • #2
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:welcome:
1. Can I use a random magnet ? Or is it the must to use the round huge magnet with a hole in the middle.
A magnet is a magnet. It shouldn't need a hole in the middle.
 
  • #3
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11,147
Based on my understanding, all i need to do is put a huge magnet at the bottom then for the levitating part use a small magnet which is in a opposite pole.
The small magnet will flip, and then get attracted by the big magnet.

Magnetic levitation will need one of those elements:
- active electromagnets controlling the position (the approach flyte is using)
- some point of contact of the levitated object (so it is not completely free)
- rotation of something, typically the levitated object
- superconductors
- strong permanent magnets and very exotic lightweight diamagnetic materials that can't carry any additional load
- strong electromagnets and diamagnetic materials
 
  • #4
The small magnet will flip, and then get attracted by the big magnet.

Magnetic levitation will need one of those elements:
- active electromagnets controlling the position (the approach flyte is using)
- some point of contact of the levitated object (so it is not completely free)
- rotation of something, typically the levitated object
- superconductors
- strong permanent magnets and very exotic lightweight diamagnetic materials that can't carry any additional load
- strong electromagnets and diamagnetic materials
So I found this video i'm wondering is it the must to use electricity to stabilize the levitated object? Because I've watched another video which is dismantling the levitating speaker, the guy (who recorded) saying that the coil causes the levitated object to stay steady in the middle.
 
  • #6
34,962
11,147
So I found this video i'm wondering is it the must to use electricity to stabilize the levitated object?
There is no stable configuration with static magnets. This is a variant of Earnshaw's theorem. No matter how you arrange magnets, there will always be some direction of force on the magnets, apart from a few specific points - but you can never place a magnet with infinite precision. The best you can do is getting close to such a point, and then keeping it there actively with variable electromagnets.
 
  • #7
There is no stable configuration with static magnets. This is a variant of Earnshaw's theorem. No matter how you arrange magnets, there will always be some direction of force on the magnets, apart from a few specific points - but you can never place a magnet with infinite precision. The best you can do is getting close to such a point, and then keeping it there actively with variable electromagnets.
Alright ! Thanks for your feedback I think I will just get one existing product and dismantle it instead of making on my own haha
 
  • #8
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KC "I think I will just get one existing product and dismantle it instead of making on my own haha"

I would seriously urge you to carefully consider how you intend to present your completed project. I doubt if your instructor will be as gullible as you are implying.

I suggest you thoroughly document your efforts. With full credit to those whose work you are basing your project on. Then thoroughly document what you did to alter/modify/add extra value to the basic work. That the additional effort you put into it will earn your credit for your project. Whether or not it is successful.

Failure can be a useful tool . "I learned a thousand ways NOT to build a light Bulb!" Thomas Edison.
 
  • #9
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11
So I found this video i'm wondering is it the must to use electricity to stabilize the levitated object? Because I've watched another video which is dismantling the levitating speaker, the guy (who recorded) saying that the coil causes the levitated object to stay steady in the middle.
With regards to your video: the spacing of the DC magnets which all have the same polar identities and the central levitating magnet are such that the weakest spot in the field is in the center and so that is the direction that the levitating magnet attempts to fall. (Remember like polls repel each other) As it falls towards the center it also reduces it's height above the field which then has a higher field strength. It would be possible to design a liquid pump that could be operating by increasing the total field strength. The sizes of each component must be carefully designed and the strength of the supporting magnets much be very close to identical. But then the question arises - why? Just because it's cool?
 
  • #10
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5,914
Thank you all for contributing here but since this is a somewhat old thread we will finally close it.
 

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