Let there be Light

It’s no easy task to introduce natural light into a home without the harsh repercussions of added heat. But there are ways around this.

Sunlight is a portion of the electromagnetic radiation given off by the Sun. In particular infrared, visible, and ultraviolet light.

On Earth, sunlight is filtered through Earth’s atmosphere and is seen as daylight when the Sun is above the horizon. When the sun is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat. When the sun is blocked by clouds or reflects off other objects, it is experienced as diffused light.

The term “sunshine duration” used by the World Meteorological Organization means the cumulative time during which an area receives direct radiance from the Sun of at least 120 watts per square meter.

Sunlight takes about 8.3 minutes to reach Earth from the surface of the Sun.

A photon starting at the center of the Sun and changing direction every time it encounters a charged particle would take between 10,000 and 170,000 years to get to the surface of the earth.

Sunlight is a key factor in photosynthesis, the process used by plants to convert light energy from the Sun into chemical energy, which can be used to fuel the organisms’ activities.