Ferrofluids Magnetic Liquid Iron 60 ml, Ferrofluid, Ferromagnetic Fluid, Liquid Iron, Magnetic Ferrofluid, Ferro Fluid Ferrofluids is an amazing liquid which reacts to the influence of a magnetic field. When a magnet is nearby the previously runny liquid suddenly starts to solidify and grow spikes that follow the pattern of the magnetic field produced by the […]
Ferrofluid Magnetic Liquid 10 ml, Ferromagnetic Fluid, Liquid Iron, Magnetic Ferrofluid, Ferro Fluid
A ferrofluid is a liquid containing very small ferromagnetic particles. These particles are around 10 nanometer in size (that’s 0,00001 mm). Because of these particles the liquid reacts strongly to magnetic fields and behaves strangely inside a magnetic field.
Part No.: F4MFF10
Volume: 10 ml
A Ferro fluid contains nearly 1017 particles per ml of liquid, making up about 5% of the total volume. Each particle in the magnetic liquid behaves like a spherical permanent magnet with a North and South Pole.
In the absence of an external magnetic field, the magnetic moments of individual particles are randomly distributed and the fluid has no net magnetisation. When a magnetic field is applied, the moments experience a torque and are aligned in the direction of the field.
A ferrofluid (portmanteau of ferromagnetic and fluid) is a liquid that becomes strongly magnetized in the presence of a magnetic field. Ferrofluid was invented in 1963 by NASA’s Steve Papell as a liquid rocket fuel that could be drawn toward a pump inlet in a weightless environment by applying a magnetic field.
File:Ferrofluid Motion Lamp.webmPlay media
A magnetic liquid is used in lieu of wax for the novelty item commonly called a lava lamp.
Ferrofluids are colloidal liquids made of nanoscale ferromagnetic, or ferrimagnetic, particles suspended in a carrier fluid (usually an organic solvent or water). Each tiny particle is thoroughly coated with a surfactant to inhibit clumping. Large ferromagnetic particles can be ripped out of the homogeneous colloidal mixture, forming a separate clump of magnetic dust when exposed to strong magnetic fields. The magnetic attraction of nanoparticles is weak enough that the surfactant’s Van der Waals force is sufficient to prevent magnetic clumping or agglomeration. Ferrofluids usually do not retain magnetization in the absence of an externally applied field and thus are often classified as “superparamagnets” rather than ferromagnets.