Lecture# 04_Solid State physics| Lecture:Elastic waves in crystals

i) Elastic waves in cubic crystals. ii) wave equation iii) stiffness constant (iv) wave propagation Follow me on facebook: https://www.facebook.com/mohammad.hamxa2 Instagram: https://www.instagram.com/mohammad.hamxa2/?hl=en Donate at: +92-3364956170 to support