The International Union of Crystallography has redefined the phrase "crystal" to include both equally normal periodic crystals and quasicrystals ("any reliable getting an primarily discrete diffraction diagram"[23]). By way of example, water ice is ordinarily present in the hexagonal variety Ice Ih, but may also exist as the cubic Ice https://keeganpomkl.blog5star.com/36915094/a-review-of-copyright-for-sale-europe