http://www.nature.com/srep/2012/120704/srep00492/full/srep00492.html
Magnetic light One of the mysteries of the DGT reactor is how that device can produce such a huge magnetic field just by heating a pile of dust. Light can produce magnetism when the nanoparticles are configure correctly. These nanoparticles can produce a magnetic dipole where the magnetic field is emitted from the center point by running light in a circle. *“Seeing is believing” is an idiom supported by people since ancient times. To see a medium response to the magnetic field component of light, “magnetic light”, by naked eyes would be an additional proof of the concept of metamaterials, which people can design to control light at the new level beyond nature.* *In this paper, we experimentally demonstrate for the first time that spherical silicon nanoparticles with sizes in the range from 100 nm to 200 nm have strong magnetic dipole response in the visible spectral range. The scattered “magnetic” light by these nanoparticles is so strong that it can be easily seen under a dark-field optical microscope. The wavelength of this magnetic resonance can be tuned throughout the whole visible spectral range from violet to red by just changing the nanoparticle size."*
