======Diamagnetism of Water======


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**Alternative titles:** Water and Magnetic Repulsion
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====Summary====                   
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====Procedure====  
  - Fill a glass with water and place it on a stable surface.
  - Bring a very strong magnet (e.g., 12,200 gauss or stronger) close to the side of the glass.
  - Observe carefully as the water is very weakly repelled, causing a small but detectable effect.  Reflecting grid paper from the surface of the water can help to show this.
  - Discuss how the induced magnetic field in the water opposes the applied field.
  - Extend discussion to stronger field demonstrations: with magnetic fields greater than 10 Tesla, even small animals (like frogs) can levitate because their bodies are mostly water (lookup videos of this).



====Links==== 
REPELLING WATER - ENGLISH - Water is diagmatic and can be repelled by a magnet - Arvind Gupta: 
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Diamagnetism of Water - Ludic Science: 
{{youtube>lTmFjQCPfCg?}}\\

📄 The diamagnetism of water - auris: [[https://www.aurismagnetic.com/en/content/52-the-diamagnetism-of-water]]\\


====Variations====
  * Try the experiment with other diamagnetic materials such as copper, zinc, bismuth, or glass and compare effects.
  * Test paramagnetic materials (like aluminum) to observe how their behavior differs from diamagnetism.
  * Use superconductors to demonstrate stronger diamagnetic levitation effects (the Meissner effect).
  * Compare weak water repulsion with ferromagnetic attraction for contrast.



====Safety Precautions====
  * Handle very strong magnets with care to avoid pinching injuries.
  * Keep magnets away from electronic devices, bank cards, and medical implants.
  * Do not attempt living-animal levitation demonstrations in a classroom, as they require extremely powerful magnets (over 10 Tesla) and specialized facilities.


====Questions to Consider====
  * Why does water repel from a magnet instead of being attracted? (Because water is diamagnetic, it induces an opposing magnetic field.)
  * Why is the effect so weak in everyday experiments? (Diamagnetism in water is very weak compared to ferromagnetism, requiring very strong fields to see noticeable effects.)
  * Why can frogs be levitated in extremely strong magnetic fields? (Their bodies are mostly water, and the induced diamagnetism opposes gravity when the magnetic field is strong enough.)
  * Why can’t we levitate humans with classroom magnets? (The required magnetic fields—tens of Tesla—are far beyond the strength of ordinary magnets and would need large laboratory setups.)
  * How does diamagnetism differ from ferromagnetism? (Diamagnetism produces a weak repulsion in all materials, while ferromagnetism produces strong attraction in certain materials like iron, cobalt, and nickel.)