Evidently most of the ring particles scatter light forward much better than in the reverse direction (toward Earth).
For example, a metamaterial can have a negative index of refraction, the ability to bend light backwards, unlike all materials found in nature, which bend light forward.
Instead, Forrest uses microlenses, tiny hemispheres of polymer a few micrometers in diameter that direct the light forward from the OLED.
Avedon asks the Senator a question quietly, McCarthy replies, and as Avedon clicks the shutter of his Rolleiflex a flash of light leaps back from the gray umbrella, sending a wash of soft light forward onto McCarthy's face.
For example, a metamaterial can have a negative index of refraction, the ability to bend light back towards the source, unlike materials found in nature, which always bend light forward away from the source.
The fact that the rings were most visible in Voyager images when backlit by sunlight implies that they are largely populated by dust-sized particles, which scatter light forward much better than back toward the Sun and Earth.
Then they shifted the rodents' exposure to this light forward by 6 hours every 5 to 6 days the equivalent of flying from Chicago to London.
By adjusting the material properties of the object and the polarizations and synchronization of the individual light waves in the beam, physicists can make the object radiate more light forward along the beam than backward toward its source.
By contrast, the researchers managed to push the light forward by 211.3 nanoseconds before losing that much light, they report in a paper in press at Physical Review Letters.
The comparison of the light forward and the backscattering efficiencies ε sc in smaller angles (sectors A and D) versus the chemisorbed bromine concentration Br (3+4) is presented in Fig. 6 b.
