7. Physical properties Table of contents 7.1 Crystals 7.2 X-rays 7.1 Crystals Questions & answers 💎 Which are the properties that vary according to directions in crystalline solids? 💎 Why do crystals with centrosymmetric point groups not show piezoelectricity? 💎 How can I check if my quartz crystal rosery is real or not? 💎 Why is crystal a preferred clock source? 💎 What determines the speed of sound in a metal crystal? 💎 What are the differences between bulk crystallography and surface crystallography? 💎 What is the effect of temperature on SC, BCC and FCC crystal structures? 7.2 X-rays Questions & answers 💎 Is x-ray a light? 💎 Can X-rays be produced from gases? 💎 How can x-rays be obtained from a cathode? 💎 Can airport x-rays detect small traces of weed? 💎 What are example of soft and hard x-ray?
