Mechanical properties of carbon nanotubes Mechanical properties of carbon nanotubes The mechanical properties of carbon nanotubes reveal them as one of the strongest materials in nature. Carbon nanotubes (CNTs) are long hollow cylinders of graphene. Although graphene sheets have 2D symmetry, carbon nanotubes by geometry have different properties in axial and radial directions. It has been shown that CNTs are very strong in the axial direction. Young's modulus on the order of and tensile strength of were obtained. Carbon nanotubes are the strongest and stiffest materials yet discovered in terms of tensile strength and elastic modulus respectively. This strength results from the covalent sp bonds
Golden Age of Television (2000s–present) Golden Age of Television (2000s–present) In the United States, the current Golden Age of Television has been a period widely regarded as being marked by a large number of high quality, internationally acclaimed television programs. The period is generally considered to have begun in either the mid-to-late 1990s, or the early 2000s. It is believed to have resulted from advances in technologies of media distribution, as well as a large increase in the number of hours of available television, which has prompted a major wave of content creation. Its name refers to the original Golden Age of Television which occurred