Biomass can be converted into valuable gases. But in order to control this process, the amount of water vapor has to be measured. This is notoriously hard, because other components of the gas can ...

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.

Anshu explores his bedroom as his eyes become accustomed to the dark, noticing the different light sources from inside his room, his house and outside his house. Whilst watching this clip ...

[Oneironaut] sent us another IR hack. This time it is a writeup on the best ways to create IR light sources from regular lights. Since normal flashlight bulbs emit a broad enough spectrum to ...

For hundreds of a millions of years, the universe existed in the dark ages—an epoch when only primordial gasses existed. Then ...

A source of light makes light. The Sun and other stars, fires, torches and lamps all make their own light and so are examples of sources of light. Some animals, such as fireflies and glow-worms ...

In that case, he suggests using multiple light sources. You can choose between light strings, large candles, lanterns, scones, lamps and pendant lights. The lights will supplement natural light ...

Researchers are exploring various strategies to improve these properties, including advanced material growth techniques, photonic structures for enhanced light-matter interaction, and active feedback ...

In some people that are photosensitive, UV light from sunlight and indoor light sources can trigger a lupus flare. In addition to sunlight, ultraviolet rays are also given off by several different ...