Tagged: chemistry

Making copper the ancient way

Historically, copper was the first metal to be worked by people. The discovery that it could be hardened with a little tin to form the alloy bronze gave the name to the Bronze Age....

Brave new world of nanotechnology

Manmade nanoparticles are being added to more and more foods, drugs, and other products and are ultimately finding their way into the environment. The name of these minuscule particles comes from the word “nanometer,”...

$500,000 of Calcium

The rare isotope Calcium-48 plays a key role in the creation of superheavy elements. But it’s not easy to obtain. Filmed at the Joint Institute for Nuclear Research, in Dubna, Russia. Calcium-48 is a...

Should you stick with Teflon?

The chemical polytetrafluoro­ethylene (PTFE), with nonstick properties, was discovered accidentally in 1938 by a DuPont chemist working with refrigerant gases. Shortly after, PTFE (dubbed Teflon) appeared as a coating on cookware and other products,...