daylight factor
Introduction
daylight, daylight or natural light is a combination of all outdoor sunlight during the day "Day (as opposed to night)") (and perhaps also during twilight).
Sometimes this light can be considered a white light, also called “dawn light.”
This includes direct sunlight, diffuse radiation from the sky, and (often) both reflected from the Earth and terrestrial objects. Sunlight scattered or reflected by objects in outer space (in other words, beyond Earth's atmosphere) is not generally considered daylight. In this way, moonlight "Claro de Luna (Astronomy)") is not considered daylight, even though it is "indirect sunlight." Day is (in everyday language) the period during the day when daylight is present.
Definition
Daylight occurs at a particular site, to some degree, as long as the sun is above the horizon of that site. (This is true for more than 50% of the Earth at any time. For an explanation of why it is not exactly half, see the section titled "introduction" in the article.) However, outdoor lighting can vary from 120,000 lux in direct sunlight at midday, which could cause eye pain, to less than 5 lux in thick stormy clouds with the moon on the horizon (even less than 1 lux for the most extreme cases), which could create shadows from distant and visible street lights. It may be darker in unusual circumstances such as a solar eclipse or very low levels of atmospheric light.
Daylight intensity under various conditions
For comparison, the lighting levels at night are:.
Daylight intensity in the solar system
Various bodies in the solar system receive light proportionally to the inverse square of their distances from the Sun. Below is an approximate table comparing the amount of light received by each planet in the solar system (and the dwarf planets Ceres "Ceres (dwarf planet)") and Pluto "Pluto (dwarf planet)") (from data in ):.