Daylight Intensity in Different Conditions
| Illuminance | Example |
|---|---|
| 120,000 lux | Brightest sunlight |
| 110,000 lux | Bright sunlight |
| 20,000 lux | Shade illuminated by entire clear blue sky, midday |
| 10,000 - 25,000 lux | Typical overcast day, midday |
| <200 lux | Extreme of darkest storm clouds, midday |
| 400 lux | Sunrise or sunset on a clear day (ambient illumination). |
| 40 lux | Fully overcast, sunset/sunrise |
| <1 lux | Extreme of darkest storm clouds, sunset/rise |
For comparison, nighttime illuminance levels are:
| Illuminance | Example |
|---|---|
| <1 lux | Moonlight |
| 0.25 lux | Full Moon on a clear night |
| 0.01 lux | Quarter Moon |
| 0.002 lux | Starlight clear moonless night sky including airglow |
| 0.0002 lux | Starlight clear moonless night sky excluding airglow |
| 0.00014 lux | Venus at brightest |
| 0.0001 lux | Starlight overcast moonless night sky |
For a table of approximate daylight intensity in the Solar System, see sunlight.
Read more about this topic: Daylight
Famous quotes containing the words daylight, intensity and/or conditions:
“Know how to live within yourself: there is in your soul a whole world of mysterious and enchanted thoughts; they will be drowned by the noise without; daylight will drive them away: listen to their singing and be silent.”
—Fyodor Tyutchev (1803–1873)
“The bourgeois treasures nothing more highly than the self.... And so at the cost of intensity he achieves his own preservation and security. His harvest is a quiet mind which he prefers to being possessed by God, as he prefers comfort to pleasure, convenience to liberty, and a pleasant temperature to that deathly inner consuming fire.”
—Hermann Hesse (1877–1962)
“Men can intoxicate themselves with ideas as effectually as with alcohol or with bang and produce, be dint of serious thinking, mental conditions hardly distinguishable from monomania.”
—Thomas Henry Huxley (1825–95)