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
Tarbosaurus: The Mightiest Ever design of Speckles from "The Dino King", while both this documentary and "The Dino King" are set 80 million years ago in Late Cretaceous South Korea, while greatly hinting that Patch's mate is Speckles' mother in "The Dino King" (as they greatly resemble each other). Just like Speckles, Patch also has encounters with Pukyongosaurus, Quetzalcoatlus, Velociraptors, and a Therizinosaurus during his early life, and suffers tragedy throughout his life in the form of being the only of his siblings to live to adulthood. Tarbosaurus: The Mightiest Ever Tarbosaurus: The Mightiest Ever is a South Korean adventure drama film directed by