Defect chemistry is the research of level defects in imperfect crystals. These contain vacancies, interstitial atoms or ions, trace features, electrons, or holes or some other deviation from the framework of a perfect crystal. Even absolutely pure crystals consist of point defects at any temperature over absolute zero. Remedy: Virtually https://onlybookmarkings.com/story18045682/facts-about-natural-yellow-sapphire-from-sri-lanka-revealed