Glass: Neither a solid nor a liquid, this common yet complicated material is still surprising scientists
- Written by John Mauro, Professor of Materials Science and Engineering, Penn State
Most glass is made by melting down soda ash, limestone and quartz sand.gezgin01/iSock via Getty ImagesGlass is a material of many faces: It is both ancient and modern, strong yet delicate, and able to adopt almost any shape or color. These properties of glass are why people use it to make everything from smartphone screens and fiber-optic cables to...