A laser is usually constructed from two basic elements: a material that provides optical gain through stimulated emission and an optical cavity that partially traps the light. When the total gain in ...

A day Star Wars fans never thought would happen is finally happening. Lucasfilm and Disney are rereleasing the original ...

KOHLER backup generators automatically switch on in the event of a power outage. Generators help run electricity to your home for appliances, whole-home circuits, sump pumps, HVAC units and water ...