These are word's examples related to overcast. Click on any word to go to its word's detail page. Or, 更多关于overcast的信息
The quality of light is indeed external and overcast, a quality maintained even without sufficient natural light.
If a building can be adequately lit on an overcast day, then the blue sky can provide twice as much light.
All indirect measurements were only taken during uniformly overcast sky conditions or after sunset (mostly after 1700 h).
The following night was overcast, pitch black and with no stars visible.
The natural light in the reading room is diffuse and directionless and, like the overcast sky, the light source is never seen directly.
On an overcast day, the light is very diffused and is about 5% of direct sunlight.
Trapping was carried out under similar general climatic conditions, avoiding rainy or heavily overcast days.
Readings were taken during overcast or cloudy conditions when diffuse light was predominant, as required by this method.
All photographs were taken under uniformly overcast sky conditions to minimize reflections in the images.
On several overcast days, observations were continued throughout the day.
An overcast sky gives the city a sombre appearance, as if brooding on an uncertain future.
The albedo of a complete overcast sky ranges from 44 to 50 per cent for cirrostratus to 90 per cent for cumulonimbus.
The rooflights exploit the fact that an overcast sky is three times as bright at the zenith as at the horizon, enabling less glazing for the same amount of light.
The photographs are especially a treat for those who have been in this area and experienced considerable overcast skies, rain, and fog, obliterating the spectacular scenery.
They restrict the daylight of the room behind and unless they are allowed to get very cold on cold overcast days they will use substantial amounts of heat.
