What Is Glass Made of According to Quantum Physics? | Science For Sleep

Welcome to Physics With William — your calm place to unwind, relax, and gently drift into sleep while exploring what an everyday material looks like at the quantum level. Tonight, we softly explore glass — not simply as a transparent solid, but as a disordered arrangement of atoms held together by quantum mechanical bonds. Unlike a crystal, glass does not have a perfectly repeating atomic pattern. Its atoms are locked into an irregular structure, creating what physicists call an amorphous solid. At the quantum level, electrons occupy allowed energy states determined by the arrangement of atoms and their bonds. In many glasses, visible photons do not have enough energy to trigger strong electronic transitions, which is one reason the material can appear transparent. So glass is not just “frozen liquid” or empty space between atoms. It is a complex quantum material whose transparency, rigidity, and optical behavior emerge from the way electrons and atoms are organized together. Take a slow breath, imagine light passing quietly through a disordered landscape of atoms and electron states, and let Physics With William carry you into calm — where even ordinary glass reveals a hidden quantum structure. Sources: Berthier & Reichman — Modern computational studies of the glass transition — https://www.nature.com/articles/s4225... Khomenko, Reichman & Zamponi — Relationship between two-level systems and quasilocalized normal modes in glasses — https://journals.aps.org/prmaterials/... Carruzzo & Yu — Why Phonon Scattering in Glasses is Universally Small at Low Temperatures — https://journals.aps.org/prl/abstract... Nature — A review of glass corrosion — https://www.nature.com/articles/s4152... NIST — Basic Optical Properties of Materials — https://nvlpubs.nist.gov/nistpubs/Leg...