DRIVING HAZARDS. The summit access road is approximately 10 miles long and has an altitude change of nearly 5,000 feet (1,510 m). There are many sections with a grade of 15 percent.
In simple terms, graphene, is a thin layer of pure carbon; it is a single, tightly packed layer of carbon atoms that are bonded together in a hexagonal honeycomb lattice. In more complex terms, it is an allotrope of carbon in the structure of a plane of sp2 bonded atoms with a molecule bond length of 0.142 nanometres.
Common sphere packings taken on by atomic systems are listed below with their corresponding packing fraction. 1  Hexagonal close-packed (hcp): 0.74. 2  Face-centered cubic (fcc): 0.74 (also called cubic close-packed, ccp) 3  Body-centered cubic (bcc): 0.68. 4  Simple cubic: 0.52. 5  Diamond cubic: 0.34.