Summers are becoming increasingly dangerous, especially in cities where the warming effects of tall buildings, concrete and asphalt send temperatures soaring. But there might be a simple, potentially ...
An image series shows how a new retroreflective material can be used to make a color-changing speed limit sign. Boxes A-F show how the sign changes color, from the perspective of drivers on the road, ...
BUFFALO, N.Y. — A thin film that reflects light in intriguing ways could be used to make road signs that shine brightly and change color at night, according to a study published on Aug. 9 in Science ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback