The Einstein solid is composed of single-frequency quantum harmonic oscillators, ϵ = �?ω = h ν displaystyle epsilon =hbar omega =hnu Silicon carbide is the sole binary compound of silicon and carbon that exists from the solid phase under usual situations. As early as 1824, Jöns Jakob Berzelius first proposed https://www.facebook.com/permalink.php?story_fbid=pfbid0PfJSgXDVkQabHKSo1oGp5zuGi6N2vqx3DJ6Q1YKGnZ6JwvNzQkKHc7pnzSc2sujfl&id=61562415773754&__cft__[0]=AZXukXIoLbo_ZTZOL6q7YPeFHfYkKjXGu4w1CjpO1lgUOCe-kYWlnbbUKAMPrvdbXHM_5mmT0AhKwyBjuhL104IibQh4G9acb14e4TTjG3hpiYz6npjyZrC2JW9EZfMookzntzDUd8pe6CYizMBjtHtdlwpp_FCmT_G-qAv_DYRvoEYv0y8HGQ_ifaeCZg8pegBuds0HirYwPYYLSXfe43Dq&__tn__=%2CO%2CP-R