A superlattice comprising alternating layers of negative-refractive-index photonic crystals and positive-refractive-index dielectric media has been shown to exhibit an effective refractive index of ...

William F. Maloney, MD: For this round table on refractive lens exchange, I invited only surgeons who have extensive first-hand, long-term experience with the procedure. We want to emphasize ...

The Brix scale, derived from the refractive index of a solution at 20 degrees Celsius (68 Fahrenheit), is widely known. Originally, it was established by determining the weight percentage of sucrose ...