Posts with tag: physics

Superconductor Hoverboard Science fair project

Published: September 19, 2022 в 1:36 pm

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Categories: The Physics

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We can easily build a true hoverboard with superconductors.

Hoverboard

Superconductors

Superconductors are a perfect example for a Quantum Physics that is macroscopic, large and accessible to play with. 

Superconductivity is created by having discrete energy levels AND by having a large energy gap between the lowest energy state and higher available states. You can read more about this here.

Besides being perfect electrical conductors, superconductors exhibit the strangest magnetic properties: 

Meissner effect – diamagnetic expulsion of external magnetic fields. The superconductor expels magnetic fields by becoming an opposite magnet.

Flux pinning or Quantum Locking – the ability to lock magnetic fields. The locking traps the superconductor in mid air, allowing it to levitate and suspend in a surrounding magnetic field.

The combination of both allows us to create frictionless, levitating motion and a true hoverboard experience.

Hoverboard science project  

Components:

  • (DIY maglev kit) Quantum Levitator
  • (DIY maglev kit) Magnets, 10x10x2 mm
  • (DIY maglev kit) Track spacers
  • (DIY maglev kit) Plastic tongs
  • Steel sheet

Activity:

Quantum Locking 

Place magnets in 2×2, 3×3 and 4×4 matrix on the still sheet. Position the magnets so that they attract each other side-by-side. In this orientation two adjacent magnets point to different direction.

Magnets arrangment
Locking of the superconductor above 2×2 magnets

Explore the locking of the superconductor due to flux pinning. Try to visualize the magnetic field lines.

Q: Why is the superconductor locked stable in all directions?

Hoverboard, frictionless motion

Build a straight track by placing the magnets on the steel sheet such that adjacent magnets, side-by-side, attract each other (opposite orientations) and magnets along the track repel each other.
Try to push magnets along the track as close to each other as possible. 

Cool the levitator and place it on the track.

Observe – The Superconductor is locked on the track AND can move freely along the straight line. 

Repeat this track shape with a spacer between the two rows. The magnets across the spacer should attract each other which will help keeping the spacer in place. 

Cool the levitator and place it on the track. Explore the frictionless motion.

Observe and think:

  • Can you tell the difference in the levitation between the two options? 
  • Draw the field lines on both cases and explain the different behaviors due to the magnetic field. 


 Enjoy !

Hands-on Quantum Physics

Published: February 24, 2019 в 9:17 am

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Categories: Experiments

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Quantum Levitation has dazzled millions of people via major TV networks, the TED conference live and online, and in universities and schools around the world. But we haven’t just created a sophisticated demo for audiences to view; we developed our kits to be simple-to-use and highly engaging educational tools.  

You Can Experiment with Quantum Levitation

It’s time to take quantum phenomena into your own hands! We designed our mini-maglev kit for whole classrooms to be able to explore circular motion. Your students can operate the kit themselves, conducting meaningful experiments like:

  1. Circular motion – polar vs. cartesian coordinates
  2. Circular motion – constant velocity
  3. Harmonic motion I 
  4. Harmonic motion II – tuneable harmonic oscillator 
  5. Conservation of mechanical energy
  6. Linear momentum conservation I
  7. Linear momentum conservation II – plastic collisions

Each involves three straightforward steps:

1. Perform the experiment

Position the maglev track (horizontal / tilted), then lock the levitator/s on the track and prepare your smartphone camera. Record several videos of the experiment using different parameters.  

2. Extract the data

Export your videos to Tracker software. Examine the recorded motion of the levitators with your students, and have them identify the relevant parameter involved (coordinates, velocity, angle, etc). 

3. Analyze the data

Use Tracker, Excel, or a similar software to analyze the data you’ve collected. You can perform linear fitting, calculate energies, etc. Discuss the results with your students and enjoy a lively Q&A session about the experiment!