Lonsdaleite is also known as "hexagonal diamond." It has an index of refraction from 2.40 to 2.41, a density from 3.2 to 3.3, and a hardness of 3.00.
... Eirene or Irene ("peace") (Roman equivalent: Pax) was one of the first generation of Horae. She was the personification of peace and wealth and was depicted in art ...
Kids.Net.Au - kids safe portal for children, parents, schools and