) What does it look like for two atoms per unit cell? Why does one speak of optical and acoustic branches?

icon
Related questions
Question

Can you solve the question and explain please? 

 

2) What does it look like for two atoms per unit cell? Why does one speak of
optical and acoustic branches?
Transcribed Image Text:2) What does it look like for two atoms per unit cell? Why does one speak of optical and acoustic branches?
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer