Carefully review the general safety advice on the back of the box cover before starting the experiment.
Read the "Magnets and electricity" section of the safety guidelines carefully before proceeding. Do not let children under 8 years old handle small magnets.
Disassemble the setup after the experiment.
Dispose of solid waste together with household garbage.
As you already know, magnets don’t just interact with other magnets—they also attract ferromagnetic materials . Magnets have an invisible area around them where their force extends, which is called their magnetic field . When one magnet is brought into the magnetic field of another, they begin to interact, attracting or repelling each other. The farther magnets are from one another, the weaker their interaction.
In this case, the fall of your magnet is slowed by the influence of a different magnetic field . So where does it come from? The tube is not attracting the magnet; it is not made of ferromagnetic material and cannot form a magnetic field. In fact, a magnetic field is created in the non-ferromagnetic tube due to the movement of the magnet itself! As its magnetic field moves with it through the tube , the moving magnet initiates the directed movement of electrons —tiny charged particles that exist in everything.
The circular movement of electrons inside the tube creates a magnetic field directed opposite to the magnetic orientation of the falling magnet. These magnetic fields repel one another, and the magnet’s fall is slowed. And the more the magnet accelerates, the stronger the magnetic field of the tube becomes, which slows it back down.
Dozens of experiments you can do at home
Kids are now able to engage with science in a way that they simply wouldn’t have been able to in the past as they shrink themselves down to see the world at a molecular level