3 results found for theory

The quantum spin Hall effect is a topological state of matter characterized by sustaining gapless chiral edge states together with an insulating bulk. This phase can be triggered out by applying strong magnetic fields in a graphene sample

James Lovelock is best known as the father of Gaia theory; the idea that all parts of our planet form a complex interacting system, like a single organism. His new book depicts Gaia in trouble. In this interview Lovelock sounds a final warning for pl....

Charles Falco describes his and David Hockney's theory of the use of optical devices by mediaeval artists.