A team of engineers at MIT led by C. Cem Tasan has discovered why steel razor blades go dull even when cutting hair that's 50 times softer than them. Using an electron microscopic, they found that ...

Close shave: electron microscope image of a razorblade cutting human hair. (Courtesy: Gianluca Roscioli/Tasan Group/MIT) New insights into why a hard steel razor blade is dulled by cutting soft hairs ...

There are several tools used in just about all the construction trades. One is at the top of our list – the utility knife. It's also known as a razor knife, and what a handy tool it is. It does ...