| http://www.w3.org/ns/prov#value | - Diamond is the hardest substance among the solid substances existing on the earth, electrically constitutes an insulating material whose heat conduction rate is highest at 30??? to 650??? C. (e.g., about five times that of copper), and is optically excellent in light transmission over a wide range extending from the ultraviolet region to the infrared region except a part of the infrared region.
|
