Recent experiments that demonstrate the negative refraction of light could bring a heated scientific debate to a close, and give negative-index materials a positive future Figure 1: Negative-index ...

First proposed over thirty years ago, negative refractive index materials bend light in the opposite direction to ordinary materials. However, they were not demonstrated experimentally until 2000.

The Executive Mosaic GovCon Index (GCI) reversed its two-day positive trend to close down by 0.087 percent to 109.628. Declining shares outpaced advancing 18 to 12. The three major indices declined ...