The THz spectrum of density fluctuations, S(Q,𝜔), of vitreous GeO₂ at ambient temperature was measured by inelastic x-ray scattering from ambient pressure up to pressures well beyond that of the known 𝛼-quartz to rutile polyamorphic (PA) transition.

Don't get wise with me!

“Impecuniosity will do you good,” Pen’s friend said …; “I don’t know anything more wholesome for a man—for an honest man, mind you—for another, the medicine loses its effect—than a state of tick. …"

Well, I told you before; I'll tell you again: