While glass remains one of the most highly studied, inexpensive, and versatile of building products, the reality is it is one of the most puzzling to scientific minds. In fact, not a moment of day goes by that we don’t have some level of contact with architectural glass, whether it be a door, window, enclosure, storefront or curtain wall, and yet we remain totally obvious that it’s a material with a hidden secret.
Why? Because it is not a true solid, like a metal for example.
Simply stated, when molten sand (sand, calcium carbonate and sodium carbonate) cools, and is formed into architectural glass, it never quite becomes a true solid. Yes, it has crystalline order like a solid, but its irregular, limited and intertwined with random molecules, as in a liquid.
Interesting?