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A dawn simulator can be used as an alarm clock. Light enters through the eyelids triggering the body to begin its wake-up cycle, including the release of cortisol, so that by the time the light is at full brightness, sleepers wake up on their own, without the need for an alarm. Most commercial alarm clocks include a "dusk" mode as well for bedtime.
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).
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 ...
Dawn begins with the first sight of lightness in the morning, and continues until the Sun breaks the horizon. The morning twilight is divided in three phases, which are determined by the angular distance of the centre of the Sun (degrees below the horizon) in the morning.
From Dusk till Dawn was conceived by Robert Kurtzman, who wrote the film's initial treatment in 1988 [7] to create work for his co-founded special effects and prosthetic makeup studio, KNB EFX Group. In 1990, KNB hired Quentin Tarantino to write the script as his first paid writing assignment, who agreed to write the screenplay for $1,500 and ...
In this case, Strand took aim to a round table located in a terrace porch. He abandoned the traditional photographic perspective, making the table look inclined, and his use of the light that enters the terrace windows makes for the shadows and the impressive geometrical forms of the picture, including the parallelograms and the large triangle ...
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