The Magnetic Ferrofluid in a Bottle — iron nanoparticles in suspension within a liquid, sealed in a glass vial. Dimensions: 7.2 × 2.2 cm. 6 colors: Green, Transparent, Pink, Yellow, Blue, Orange. Comes with 2 magnets for immediate handling. Creates artistic and hypnotic shapes when in contact with the magnet.
6 colors available
✦
Hypnotic shapes on contactBring the magnet closer: the ferrofluid rises into spikes, forming valleys, arches, and patterns that seem alive. Each manipulation creates a unique spectacle.
◆
Iron nanoparticles in suspensionThe ferrofluid is composed of iron nanoparticles in a colloidal suspension — they follow the magnetic field with fascinating precision and fluidity.
➤
Ever-changing patternsEach manipulation with the magnet creates a different pattern depending on the distance, angle, and speed of approach — the visual possibilities are endless.
✦
Anti-stress & relaxation toolWatching the hypnotic movements of the ferrofluid has an immediate calming effect — a silent, visual anti-stress tool for the office or home.
◆
2 magnets includedComes ready to use with two magnets — immediate handling as soon as the package is opened. No additional equipment required.
➤
6 colors — original science giftGreen, Transparent, Pink, Yellow, Blue, or Orange — choose the color according to the recipient's style. Ideal for curious teenagers and adults.
Glass ferrofluid · 7.2 × 2.2 cm · 6 colors · 2 magnets included · iron nanoparticles
Ferrofluid is one of the most counter-intuitive materials in existence — a liquid that behaves like a solid when in contact with a magnet. Bring the magnet near the bottle: the liquid comes to life, rising into irregular spikes, forming deep valleys and structures that seem to defy logic. Move the magnet away: everything collapses and becomes liquid again. In glass 7.2 × 2.2 cm, 6 colors, 2 magnets included — the physics of fluids made visible and contemplative.
Contents
✦
1 ferrofluid bottleGlass · 7.2 × 2.2 cm · color of your choice
◆
2 magnetsFor immediate handling
| Materials |
Glass + ferrofluid (iron nanoparticles) |
| Dimensions |
7.2 × 2.2 cm |
| Colors |
Green / Transparent / Pink / Yellow / Blue / Orange |
| Contents |
1 bottle + 2 magnets |
| Principle |
Ferrofluid — iron nanoparticles in suspension |
| Usage |
Science · anti-stress · decoration · educational |
For the best visual effects: bring a magnet very slowly and watch the spikes (Rosensweig instability) form gradually. Try two magnets simultaneously on either side of the bottle for more complex patterns. Light the ferrofluid from the side with a small lamp to reveal the depth of the formed structures.
The most fascinating science gift imaginable: glass, ferrofluid, 7.2 × 2.2 cm, 6 colors, 2 magnets included. An original and memorable gift for a birthday, Christmas, or teacher's gift — for teenagers and adults passionate about science and beautiful objects.
Frequently asked questions
What exactly is ferrofluid?
Ferrofluid is a colloidal liquid composed of iron nanoparticles (magnetite) in suspension within a carrier liquid. These nanometer-sized particles are too small to settle by gravity and remain in permanent suspension. When in contact with a magnet, they align and form the characteristic structures known as "Rosensweig instability" — those regular spikes visible on the surface of the liquid.
Why does ferrofluid form spikes?
The spikes (Rosensweig instability) form when the magnetic force exceeds the liquid's surface tension. The ferrofluid seeks to follow the magnetic field while minimizing its energy — the balance between these two forces creates the characteristic, regular structures observable on the surface.
Are the included magnets powerful enough?
Yes — the 2 included magnets are sized to create visual effects through the glass of the bottle. For more intense effects or from a greater distance, additional neodymium magnets (sold separately) can amplify the formations.
Is ferrofluid dangerous?
Not under normal conditions of use — it is sealed in a glass bottle. Avoid any direct contact with the ferrofluid (it stains and is difficult to clean) and keep out of reach of young children. Do not open the bottle.
