Graphene smaller amplitude and higher frequency. This phenomenon, named "membrane effect", was predicted by Lifshitz in 1952. A prediction that was published in 2015 suggested a melting point of ≈4125 K. Recent and more sophisticated modelling has increased this temperature to at least 5000 K. At 6000 K (the sun's surface having an effective temperature of 5,777 K) graphene melts into an agglomeration of loosely coupled doubled bonded chains, before becoming a gas. The carbon–carbon bond length in graphene is about 0.142 nanometers. Graphene sheets stack to form graphite with an interplanar spacing of . Graphene is the strongest material ever
Children of the Atom Children of the Atom Children of the Atom is a 1953 science fiction novel by American writer Wilmar H. Shiras, which has been listed as one of "The Most Significant SF & Fantasy Books of the Last 50 Years, 1953-2002." The book is a collection and expansion of three earlier stories, the most famous of which is the novella "In Hiding" from 1948, which appeared on several "Best SF" lists. The book's plot focuses on superhuman children with immeasurably high intelligence who have to hide their youth, and work from hiding in order to get along in the less-intelligent world.