Britannica AI Icon

Quick Summary

Oxide glasses are a broad category of materials, with most commercial glasses being silica-based. Silica, or silicon dioxide (SiO2), is abundant and forms the basis for glasses used in applications like containers, windows, and lightbulbs, primarily due to its low cost and durability.1

Pure silica glass, also known as vitreous silica, is used when high service temperatures, thermal shock resistance, chemical durability, and low electrical conductivity are required. Other silica-based glasses include soda-lime-silica, borosilicate glass (used for chemical glassware), and lead-alkali silicate glass (used for lead crystal).1

While most important glasses are silica-based, non-silica oxide glasses, such as phosphates and borates, have limited commercial use, primarily in bioresorbable products like surgical mesh. Glass is transparent because its electrons cannot absorb and reemit photons, allowing light to pass through. However, glasses can be opaque to certain wavelengths, such as ultraviolet and infrared radiation, and can be tinted by adding metallic oxides.23

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.