Search results
Results from the WOW.Com Content Network
The time of dusk is the moment at the very end of astronomical twilight, just before the minimum brightness of the night sky sets in, or may be thought of as the darkest part of evening twilight. [4] However, technically, the three stages of dusk are as follows: At civil dusk, the center of the Sun's disc goes 6° below the horizon in the ...
[1] [2] During these times, the brightness of the sky matches the brightness of streetlights, signs, car headlights and lit windows. The period of time shortly before the magic hour at sunrise, or after it at sunset, is called the "blue hour". This is when the sun is at a significant depth below the horizon, when residual, indirect sunlight ...
Twilight occurs according to the solar elevation angle θ s, which is the position of the geometric center of the Sun relative to the horizon. There are three established and widely accepted subcategories of twilight: civil twilight (nearest the horizon), nautical twilight, and astronomical twilight (farthest from the horizon).
A long-exposure image of star trails in the night sky above Mount Hood National Forest, Washington, facing north at 6,600 ft (2,000 m) above sea level A London taxi turning outside the railway station at Sutton, London The Singapore skyline at night An aerial photograph of Los Angeles County at night Mariehamn, a capital of Åland, at night
In the case of alpenglow, which is similar to the Belt of Venus, [7] afterglow is used in general for the golden-red glowing light from the sunset and sunrise reflected in the sky, and in particularly for its last stage, when the purple light is reflected. [2] [1] The opposite of an afterglow is a foreglow, which occurs before sunrise ...
Of the two, Telperion is male and silver, while the other, Laurelin, is female and golden. The Trees stand on the hill Ezellohar, outside Valimar, the city of the Valar. They grow in the presence of all the Valar, watered by the tears of the Vala of pity and mourning, Nienna. [T 1] Telperion's leaves are dark green above and silver below.
Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.
The western twilight sky after sunset, during the blue hour (around nautical dusk).The deep-blue color of the upper portion is attributable to Chappuis absorption. Chappuis absorption (French:) refers to the absorption of electromagnetic radiation by ozone, which is especially noticeable in the ozone layer, which absorbs a small part of sunlight in the visible portion of the electromagnetic ...