designed:  page 10 Tuned for iPhone 5  iPad  iPhone  Auto Tuned for Win8 Atom Chart Titom Theory MUSE edit fatacy's comment: Clarification of Structure of a Complex That Plays Central Role in Photosynthesis - A major step toward artificial photosynthesis. - Wikipedia fatacy's comment: Besides sliding electrical contacts, gold is also used in electrical contacts because of its resistance to corrosion , electrical conductivity , ductility and lack of toxicity . Switch contacts are generally subjected to more intense corrosion stress than are sliding contacts. - Wikipedia