21. For the guy right above me : Gravitational phonon ? 22. The " antigravity " Phonon Maser is hidden in the secret undeground lab. 23. A peak to the left is that for the annihilation of a phonon . 24. The Hamiltonian of phonon system with the harmonic approximation is 25. The decrease in electron concentration reduced the rate of electron-phonon scattering. 26. Each phonon mode can be split into one longitudinal and two transverse polarization branches. 27. Acoustic phonons exhibit a linear relationship between frequency and phonon wavevector for long wavelengths. 28. Consider an illustration of a transverse phonon below. 29. The electron mobility in spin electrons may form a bipolaron sharing a phonon cloud. 30. Examples include quantum tunneling, negative resistance, phonon -assisted hopping and polarons.
