The mystery of the small dimensionless number with a big effect

Non-dimensional numbers may sound like a scary, incomprehensible term reserved for scientists in a laboratory, but you have more experience with them than you know. The Mach number measures the speed of an object relative ...

Absorbing electromagnetic energy while avoiding the heat

Electrical engineers at Duke University have created the world's first electromagnetic metamaterial made without any metal. The device's ability to absorb electromagnetic energy without heating up has direct applications ...

A mutational timer is built into the chemistry of DNA

If you had to copy billions of letters from one sheet of paper to another, you'd probably make a few mistakes. So it might not come as a surprise that when DNA makes a copy of its three-billion-base genetic code, it can slip ...

Is there a limit to human endurance? Science says yes

From the Ironman triathlon to the Tour de France, some competitions test the limits of even the toughest endurance athletes. Now, a new study of energy expenditure during some of the world's longest, most grueling sporting ...

Copper ions flow like liquid through crystalline structures

Materials scientists have sussed out the physical phenomenon underlying the promising electrical properties of a class of materials called superionic crystals. A better understanding of such materials could lead to safer ...

Fly researchers find another layer hiding in the code of life

A new examination of the way different tissues read information from genes has discovered that the brain and testes appear to be extraordinarily open to the use of many different kinds of code to produce a given protein.

Lego-like wall produces acoustic holograms

Research Triangle engineers have developed a simple, energy-efficient way to create three-dimensional acoustic holograms. The technique could revolutionize applications ranging from home stereo systems to medical ultrasound ...

page 3 from 40