Researchers invent novel vertical-cavity surface-emitting laser

Researchers at the George Washington University have developed a new design of vertical-cavity surface-emitting laser (VCSEL) that demonstrates record-fast temporal bandwidth. This was possible by combining multiple transverse ...

Prehistoric shark hid its largest teeth

Early sharks that lived 300 to 400 million years ago not only dropped their lower jaws downward but rotated them outward when opening their mouths. This enabled them to make the best of their largest, sharpest and inward-facing ...

Cavity

A cavity is a hole. It may refer to:

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