http://ideas.eyeconx.net/story.php?title=physicists-discovery-alters-conventional-understanding-of-sight For almost 50 years, scientists have believed that light signals could not be initiated unless special light-receptor molecules in the retinal cells first changed their shape in a process called isomerization. However, the SU research team, which includes researchers from Columbia University, has demonstrated that visual signals can be initiated in the absence of isomerization. To se... Thu, 30 Jun 2011 13:46:33 EDT en