Glass is made of sand, which is a kind of rock. But glass is transparent. We explore why! Glass is made of sand, which is a kind of rock. But glass is transparent, and rocks aren’t transparent. What’s ...

(via It's Okay to Be Smart) Glass is made of sand, which is a kind of rock. But glass is transparent, and rocks aren’t transparent. What’s up with that? Why is glass clear? And why can I sit on a ...

Modern society is now so dependent on electronics that an invisible radiation pulse is ...

The best way to understand glass is to understand how it is made. The first step to make glass requires heating up a mixture of minerals – often soda ash, limestone and quartz sand – until they melt ...

There’s something magical about transparent furniture. Glass and polycarbonate, their shifting surfaces and light play, bring ...

Glass making dates back to ancient Mesopotamia, an astonishing 4,000 years ago. Known as “humankind’s most important material,” 1 glass is ubiquitous in our modern environment. It is used in the ...