Abstract: A birefringence compensation technique based on angled star couplers in arrayed waveguide grating (AWG) is experimentally investigated in silica-on-silicon waveguide with B–Ge codoped upper ...

Abstract: We have designed, synthesized, and evaluated the physical properties of some high birefringence (Deltan) isothiocyanato phenyltolane and quaterphenyl ... These compounds can be used as ...

Cats can see color—but not the same way humans do. Here’s the truth about how feline vision works and how it differs from ours. As much as we like to impose human personalities on our pets ...

There’s no natural progression from one color to the next, so to work out the ordering one has to rely on the position of adjacent bands of color, or look repeatedly between the map and the key. A ...

A smart scale does more than show your weight. It can measure body fat, muscle mass and heart rate, giving you a more complete picture of your health. As CNET’s fitness expert, my role is to ...

Scales can be a helpful adaptation for many animals, and they can vary significantly in size, shape, texture, color, and even function. When most of us think of animals with scales, fish and reptiles ...

Aquamarine and heliodor are colored by Fe ions, an important coloring agent for beryl. Blue to yellow gem beryl was studied by quantitative spectroscopy and trace-element analytical techniques to ...

The International Nuclear and Radiological Event Scale (INES) is a tool for communicating the safety significance of nuclear and radiological events to the public. Member States use INES on a ...

To Do and Notice Hold the "sandwich" so that you are looking through it at your light source. Rotate the polarizer closest to you and observe the color changes. What's Going On? The colors you see ...