Social media users across the Southwest, including in Arizona, shared photos of a mysterious beam of light in the sky on the ...

Light travels in straight lines and will keep going until it is blocked by an opaque object We are surrounded by sources of light. The Sun is our main source of natural light but we also get light ...

Lasers, LEDs and light sources are devices that create light. LEDs (light emitting diodes) convert an electrical current into light using spontaneous emission in optically active semiconductors.

Heat and light, in their application to the manifold ... of manganese and chlorate of potash—have ordinarily been the source of oxygen ; this gas can be evolved from them with ease ; however ...

The emergence of convenient sources of broadband light spanning the visible and near-infrared is proving increasingly useful for applications involving spectroscopy, imaging and metrology ...

This story appears in the March 2015 issue of National Geographic magazine. Watch. Steven Haddock, one of the world experts on life-forms that make light, is about to nudge the animal with a glass ...

They generate coherent light through the process of stimulated emission, similar to conventional lasers, but at a much smaller scale. Nanolasers have gained significant attention due to their ...

A spotlight functions similarly to a spotlight in real life and provides a very direct source of light. It is a cone of light which emits light from a single point in one direction. By changing ...

Conventional measurements are not enough "Many chemical components of the product gas can be detected using infrared light," ...

Expressing her love for her father, Shruti on Instagram wrote, "Always my source of light and strength and constant source of laughter; love you the most appa @ikamalhaasan." She also shared a ...