And the presence of magnetite in birds» beaks had led some researchers to believe that this structure was key to birds» homing abilities. (sciencemag.org)
2014 Mercedes - Benz G63 AMG finished in Magnetite Black Metallic with Designo Black Leather interior. (dupontregistry.com)
There are two main theoretical models, one based on small magnetite particles that may reorient in an external magnetic field and the other based on the idea that upon photo excitation a certain type of molecules in the eye of a bird support a radical pair formed by two electrons which evolve under the joint action of the Zeeman interaction with the external magnetic field and the hyperfine interaction with the supporting molecule. (qubit-ulm.com)