Lots of different sources produce light. Earth's main source of natural light is the Sun. At night, moonlight is created by the moon reflecting the Sun's light. This allows us to see at night ...

White light-emitting diodes (LEDs ... eventually becoming a uniform natural white (a colour temperature of 6,000 K) at drive currents of 20 mA and above.

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.

The Pantheon in Rome, with its oculus filtering daylight into the grand domed interior, demonstrates how natural light can create a sense of the divine. Gothic cathedrals, with their stained-glass ...