WASHINGTON, D.C. Jan. 17, 2014 -- From the sleek hulls of racing yachts to Michael Phelps' shaved legs, most objects that move through the water quickly are also smooth. But researchers from UCLA have ...

WASHINGTON, March 8 (UPI) --An amputee was able to feel rough and smooth surfaces using a bionic fingertip connected nerves in his arm, scientists in Switzerland and Italy report in a new study.

While there already are powered suction-cup devices that allow people or robots to climb walls, they only work on smooth surfaces. Chinese scientists, however, have now developed a system that sticks ...

In the smoother area of the same surfaces (Figure 2), the quartz crystals are consistently leveled over the area, resulting in a flatter topography. Crystals have been worn down to the same plane.

Nineteen years ago this month, Chicago experienced one of the worst heat waves in its history. Nearly 500 people, mostly poor and elderly residents of the city’s dense urban core, perished in ...

Those who go with the flow assert that rough surfaces cause turbulence in fluids passing over them. The claim that, under certain conditions, the opposite is possible disturbs that cherished belief.