How glassblowing works • Earth.com

How glassblowing works

11-22-2017


Today’s Video of the Day comes from the American Chemical Society’s Reactions series and features a look at how glassblowing works.

The primary ingredient in most glass is sand, which is made of silicon dioxide, also known as silica. When temperatures reach 1,700 degrees Celsius, silica melts. But adding sodium carbonate can lower this melting point to a more manageable 850 degrees Celsius.

Then, by adding calcium carbonate, the material becomes less water soluble and more durable to work with.

By Rory Arnold, Earth.com Staff Writer

Video Credit: American Chemical Society

News coming your way
The biggest news about our planet delivered to you each day