0_Wizard
I love watching the sunset from the beach it is beautiful, The Sun will set exactly due west at the equator on the spring.
The Sun will set exactly due west at the equator on the spring and fall equinoxes, each of which occurs only once a year.
chosen_Sunset_0
Sunset
chosen_topic_0_Sunset
Sunset
Sunset or sundown is the daily disappearance of the Sun below the horizon as a result of Earth's rotation. The Sun will set exactly due west at the equator on the spring and fall equinoxes, each of which occurs only once a year. The time of sunset is defined in astronomy as the moment when the trailing edge of the Sun's disk disappears below the horizon. Near to the horizon, atmospheric refraction causes the ray path of light from the Sun to be distorted to such an extent that geometrically the Sun's disk is already about one diameter below the horizon when a sunset is observed. Sunset is distinct from twilight, which has three phases, the first being "civil" twilight, which begins once the Sun has disappeared below the horizon, and continues until it descends to 6 degrees below the horizon; the second phase is "nautical" twilight, between 6 and 12 degrees below the horizon; and the third is "astronomical" twilight, which is the period when the Sun is between 12 and 18 degrees below the horizon.
Sundial
A sundial is a device that tells the time of day when there is sunlight by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat plate (the "dial") and a "gnomon", which casts a shadow onto the dial. As the Sun appears to move across the sky, the shadow aligns with different "hour-lines", which are marked on the dial to indicate the time of day. The "style" is the time-telling edge of the gnomon, though a single point or "nodus" may be used. The gnomon casts a broad shadow; the shadow of the style shows the time. The gnomon may be a rod, wire, or elaborately decorated metal casting.
List of Warriors characters
The "Warriors" novel series is written by Erin Hunter. Due to the large number of characters present in the novel series, this list is divided by Clan, e.g., all characters in ThunderClan are listed together. Each cat has a prefix. Eg: Dawn, Violet etc. As a young kit they will have -kit at the end of their name. Eg: Dawnkit Violetkit. When they are an apprentice -paw will be at the end of their name. Eg: Dawnpaw Violetpaw. When that cat is a warrior or medicine cat they will have a suffix. Eg: -fur -pelt -cloud -flame -wing -song etc. Eg: Dawnsong Violetflame. That is if they are in one of the clans like ThunderClan, RiverClan, WindClan, ShadowClan, Skyclan.
Analemma
In astronomy, an analemma (; from Greek "analēmma" "support") is a diagram showing the variation of the position of the Sun in the sky over the course of a year, as viewed at a fixed time of day and from a fixed location on the Earth. The north–south component of the analemma is due to change of the Sun's declination caused by the tilt of the Earth's axis, and the east–west component is due to nonuniform rate of change of the Sun's right ascension, governed by combined effects of axial tilt and Earth's orbital eccentricity. The diagram has the form of a slender figure eight, and can often be found on globes of the Earth.
Equinox
An equinox is commonly regarded as the moment when the plane of Earth's equator passes through the center of the Sun's disk, which occurs twice each year, around 20 March and 23 September. In other words, it is the point in which the center of the visible sun is directly over the equator. This simplified, but incorrect, understanding of Earth's orbital motion can lead to errors of up to 69 seconds from the actual time of equinox. The instants of the equinoxes are currently defined to occur when the ecliptic longitude of the Sun is either 0° or 180°. As the true motion of the Earth is affected by the gravitational pull of the Sun and Moon (and to lesser extent the other planets), there are tiny (up to 1¼ arcsecond) variations of the Sun's ecliptic latitude (discussed in section below) that may mean the Sun's center is not precisely over the equator at the moment of equinox.
Celestial equator
The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth. This plane of reference bases the equatorial coordinate system. In other words, the celestial equator is an abstract projection of the terrestrial equator into outer space. As a result of the planet's axial tilt, the celestial equator is currently inclined by about 23.44° with respect to the ecliptic plane. An observer standing on Earth's equator visualizes the celestial equator as a semicircle passing through the zenith, the point directly overhead. As the observer moves north (or south), the celestial equator tilts towards the opposite horizon.
Daytime
On Earth, daytime is roughly the period on any given point of the planet's surface during which it experiences natural illumination from indirect or (especially) direct sunlight. Other planets and natural satellites that rotate in relation to a luminous primary, such as a local star, also experience daytime of a sort, but this article primarily discusses daytime on Earth. Approximately half of the Earth is illuminated at any time by the Sun. The area subjected to direct illumination is almost exactly half the planet; but because of atmospheric and other effects that extend the reach of indirect illumination, the area of the planet covered by either direct or indirect illumination amounts to slightly more than half the surface.
1_Apprentice
Sunsets are beautiful! I live in Florida, so we get to see some pretty nice sunsets out here. Which do you prefer, sunset or sunrise?
0_Wizard
sunset of course although sunrise are very beutiful as well, Near to the horizon, atmospheric refraction causes the ray path of light from the Sun to be distorted.
Near to the horizon, atmospheric refraction causes the ray path of light from the Sun to be distorted to such an extent that geometrically the Sun's disk is already about one diameter below the horizon when a sunset is observed.
partner_Sunset_3
Sunset
partner_1_Sunset
Atmospheric refraction
Atmospheric refraction is the deviation of light or other electromagnetic wave from a straight line as it passes through the atmosphere due to the variation in air density as a function of height. This refraction is due to the velocity of light through air, decreasing (the refractive index increases) with increased density. Atmospheric refraction near the ground produces mirages and can make distant objects appear to shimmer or ripple, elevated or lowered, stretched or shortened, with no mirage involved. The term also applies to the refraction of sound. Atmospheric refraction is considered in measuring the position of both astronomical and terrestrial objects.
Sunset
Sunset or sundown is the daily disappearance of the Sun below the horizon as a result of Earth's rotation. The Sun will set exactly due west at the equator on the spring and fall equinoxes, each of which occurs only once a year. The time of sunset is defined in astronomy as the moment when the trailing edge of the Sun's disk disappears below the horizon. Near to the horizon, atmospheric refraction causes the ray path of light from the Sun to be distorted to such an extent that geometrically the Sun's disk is already about one diameter below the horizon when a sunset is observed. Sunset is distinct from twilight, which has three phases, the first being "civil" twilight, which begins once the Sun has disappeared below the horizon, and continues until it descends to 6 degrees below the horizon; the second phase is "nautical" twilight, between 6 and 12 degrees below the horizon; and the third is "astronomical" twilight, which is the period when the Sun is between 12 and 18 degrees below the horizon.
Air mass (astronomy)
In astronomy, air mass (or airmass) is the path length for light from a celestial source to pass through the atmosphere. As it penetrates the atmosphere, light is attenuated by scattering and absorption; the thicker atmosphere through which it passes, the greater the attenuation. Consequently, celestial bodies at the horizon appear less bright than when at the zenith. The attenuation, known as atmospheric extinction, is described quantitatively by the Beer–Lambert–Bouguer law. “Air mass” normally indicates "relative air mass", the path length relative to that at the zenith at sea level so, by definition, the sea-level air mass at the zenith is 1.
Atmospheric optics
Atmospheric optics deals with how the unique optical properties of Earth's atmosphere cause a wide range of spectacular optical phenomena. The blue color of the sky is a direct result of Rayleigh scattering, which redirects higher frequency (blue) sunlight back into the field of view of the observer. Because blue light is scattered more easily than red light, the Sun takes on a reddish hue when it is observed through a thick atmosphere, as during a sunrise or sunset. Additional particulate matter in the sky can scatter different colors at different angles, creating colorful, glowing skies at dusk and dawn.
Sunrise
Sunrise or sun up is the instant at which the upper edge of the Sun appears over the horizon in the morning. The term can also refer to the entire process of the Sun crossing the horizon and its accompanying atmospheric effects. Although the Sun appears to "rise" from the horizon, it is actually the "Earth's" motion that causes the Sun to appear. The illusion of a moving Sun results from Earth observers being in a rotating reference frame; this apparent motion is so convincing that most cultures had mythologies and religions built around the geocentric model, which prevailed until astronomer Nicolaus Copernicus first formulated the heliocentric model in the 16th century.
Optics
Optics is the branch of physics which involves the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties. Most optical phenomena can be accounted for using the classical electromagnetic description of light. Complete electromagnetic descriptions of light are, however, often difficult to apply in practice.
Mirage of astronomical objects
A mirage of an astronomical object is a naturally occurring optical phenomenon, in which light rays are bent to produce distorted or multiple images of an astronomical object. The mirages might be observed for such astronomical objects as the Sun, the Moon, the planets, bright stars and very bright comets. The most commonly observed are sunset and sunrise mirages. Mirages are distinguished from other refraction phenomena. One of the most prominent features of mirages is that a mirage might only produce images vertically, not sideways, while a simple refraction might distort and bend the images in any way.
1_Apprentice
Is that why the sun looks much bigger as it gets closer to the horizon? Any idea why the sun changes into crazy colors right before it sets?
0_Wizard
yes that is why and yeah i think it is beacuse of the sun rays that reflect on the water and clouds that make it get those crazy colors.
no_passages_used
no_passages_used
no_passages_used
no_passages_used
Atmospheric optics
Atmospheric optics deals with how the unique optical properties of Earth's atmosphere cause a wide range of spectacular optical phenomena. The blue color of the sky is a direct result of Rayleigh scattering, which redirects higher frequency (blue) sunlight back into the field of view of the observer. Because blue light is scattered more easily than red light, the Sun takes on a reddish hue when it is observed through a thick atmosphere, as during a sunrise or sunset. Additional particulate matter in the sky can scatter different colors at different angles, creating colorful, glowing skies at dusk and dawn.
List of recurring The Simpsons characters
"The Simpsons" includes a large array of supporting characters: co-workers, teachers, family friends, extended relatives, townspeople, local celebrities, fictional characters within the show, and even animals. The writers originally intended many of these characters as one-time jokes or for fulfilling needed functions in the town. A number of them have gained expanded roles and have subsequently starred in their own episodes. According to the creator of "The Simpsons", Matt Groening, the show adopted the concept of a large supporting cast from the Canadian sketch comedy show "Second City Television".
Flag of the Republic of China
The national flag of the Republic of China (Taiwan) is a red flag with a navy blue canton bearing a white sun with twelve triangular rays. In Chinese, the flag is commonly described as Blue Sky, White Sun, and a Wholly Red Earth to reflect its attributes. The canton (upper corner on the hoist side) originated from the "Blue Sky with a White Sun flag" () designed by Lu Haodong, a martyr of the Xinhai Revolution. He presented his design to represent the revolutionary army at the inauguration of the Society for Regenerating China, an anti-Qing society in Hong Kong, on February 21, 1895. This design was later adopted as the KMT party flag and the Coat of Arms of the Republic of China.
Surya Majapahit
Surya Majapahit (The Sun of Majapahit) is the emblem commonly found in ruins dated from the Majapahit era. The emblem commonly took the form of an eight-pointed sun ray with the rounded part in the center depicting Hindu deities. The emblem might have taken the form of a cosmological diagram haloed by typical "Surya Majapahit" sun rays, or a simple circle with typical sun rays. Because of the popularity of this sun emblem during the Majapahit era, it is suggested that the sun emblem served as the imperial symbol or emblem of the Majapahit empire. The most common depiction of Surya Majapahit consists of the images of nine deities and eight sun rays.
Cloud
In meteorology, a cloud is an aerosol comprising a visible mass of minute liquid droplets, frozen crystals, or particles suspended in the atmosphere above the surface of a planetary body. The droplets and crystals may be made of water or various chemicals. On Earth, clouds are formed as a result of saturation of the air when it is cooled to its dew point, or when it gains sufficient moisture (usually in the form of water vapor) from an adjacent source to raise the dew point to the ambient temperature. They are seen in the Earth's homosphere (which includes the troposphere, stratosphere, and mesosphere).
Vädersolstavlan
The original painting, which was produced shortly after the event and traditionally attributed to Urban målare ("Urban [the] Painter"), is lost, and virtually nothing is known about it. However, a copy from 1636 by Jacob Heinrich Elbfas held in Storkyrkan in Stockholm is believed to be an accurate copy and was until recently erroneously thought to be the restored original. It was previously covered by layers of brownish varnish, and the image was hardly discernible until carefully restored and thoroughly documented in 1998–1999. The painting was produced during an important time in Swedish history.
Chinese sun and moon mirrors
The yángsuì 陽燧 or sun-mirror was an ancient Chinese burning-mirror that concentrates sunlight to ignite tinder and the fāngzhū 方諸 or moon-mirror was a device that collects nighttime dew by condensation. These two bronze implements are literary metaphors for yin and yang, associating the ""yang"-mirror" "yangsui" with the sun (a.k.a. "tàiyáng" 太陽 "great "yang""), fire, dry, and round, and the ""yin"-mirror" "fangshu" with the moon ("tàiyīn" 太陰 "great "yin""), water, wet, and square. There are numerous Chinese names for the fire-producing "yángsuì" 陽燧 "sun-mirror" and water-producing "fāngzhū" 方諸 "moon-mirror".
1_Apprentice
Oh! That explains the crazy oranges and pinks that we see when the sun sets. I heard that you can see a flash of green right before it sets too, or is that just a myth?
0_Wizard
i have heard about the green ray but never seen it. Night occurs when the Sun reaches 18 degrees below the horizon 
Night occurs when the Sun reaches 18 degrees below the horizon and no longer illuminates the sky.
chosen_Sunset_0
Sunset
chosen_topic_0_Sunset
Twilight
Twilight on Earth is the illumination of the lower atmosphere when the Sun itself is not directly visible because it is below the horizon. Twilight is produced by sunlight scattering in the upper atmosphere, illuminating the lower atmosphere so that Earth's surface is neither completely lit nor completely dark. The word "twilight" is also used to denote the periods of time when this illumination occurs. The farther the Sun is below the horizon, the dimmer the twilight (other things such as atmospheric conditions being equal). When the Sun reaches 18 degrees below the horizon, the twilight's brightness is nearly zero, and evening twilight becomes nighttime.
Sunset
Sunset or sundown is the daily disappearance of the Sun below the horizon as a result of Earth's rotation. The Sun will set exactly due west at the equator on the spring and fall equinoxes, each of which occurs only once a year. The time of sunset is defined in astronomy as the moment when the trailing edge of the Sun's disk disappears below the horizon. Near to the horizon, atmospheric refraction causes the ray path of light from the Sun to be distorted to such an extent that geometrically the Sun's disk is already about one diameter below the horizon when a sunset is observed. Sunset is distinct from twilight, which has three phases, the first being "civil" twilight, which begins once the Sun has disappeared below the horizon, and continues until it descends to 6 degrees below the horizon; the second phase is "nautical" twilight, between 6 and 12 degrees below the horizon; and the third is "astronomical" twilight, which is the period when the Sun is between 12 and 18 degrees below the horizon.
Solstice
A solstice is an event occurring when the Sun appears to reach its most northerly or southerly excursion relative to the celestial equator on the celestial sphere. Two solstices occur annually, on about 21 June and 21 December. The seasons of the year are directly connected to both the solstices and the equinoxes. The term "solstice" can also be used in a broader sense, as the day when this occurs. The day of the solstice in either hemisphere has either the most sunlight of the year (summer solstice) or the least sunlight of the year (winter solstice) for any place other than the Equator. Alternative terms, with no ambiguity as to which hemisphere is the context, are June solstice and December solstice, referring to the months of year in which they take place.
The Green Ray
The Green Ray () is a novel by the French writer Jules Verne published in 1882 and named after the optical phenomenon of the same name. It is referenced in a 1986 film of the same name by Eric Rohmer. The heroes are trying to observe the green ray in Scotland. After numerous unsuccessful tries caused by clouds, flocks of birds or distant boat sails hiding the sun, the phenomenon is eventually visible, but the heroes, finding love in each other's eyes, don't pay attention to the horizon. Green flashes and green rays are rare optical phenomena that occur shortly after sunset or before sunrise, when a green spot is visible for a short period of time above the sun, or a green ray shoots up from the sunset point.
Dawn
Dawn, from an Old English verb "dagian": "to become day", is the time that marks the beginning of twilight before sunrise. It is recognized by the appearance of indirect sunlight being scattered in the atmosphere, when the centre of the Sun's disc reaches 18° below the horizon. This dawn twilight period will last until sunrise (when the Sun's upper limb breaks the horizon), as the diffused light becomes direct sunlight. Dawn begins with the first sight of lightness in the morning, and continues until the sun breaks the horizon. This morning twilight "before sunrise", is divided into three categories depending on the amount of sunlight that is present in the sky, which is determined by the angular distance of the centre of the Sun (degrees below the horizon) in the morning.
Green flash
Green flashes and green rays are optical phenomena that sometimes occur just before sunset or right after sunrise. When the conditions are right, a green spot is visible above the upper rim of the Sun's disk. The green appearance usually lasts for no more than a second or two. Rarely, the green flash can resemble a green ray shooting up from the sunset (or sunrise) point. Green flashes occur because the atmosphere can cause the light from the sun to separate out into different colors. Green flashes are a group of phenomena which stem from slightly different causes, and therefore some types of green flashes are more common than others.
Atmospheric optics
Atmospheric optics deals with how the unique optical properties of Earth's atmosphere cause a wide range of spectacular optical phenomena. The blue color of the sky is a direct result of Rayleigh scattering, which redirects higher frequency (blue) sunlight back into the field of view of the observer. Because blue light is scattered more easily than red light, the Sun takes on a reddish hue when it is observed through a thick atmosphere, as during a sunrise or sunset. Additional particulate matter in the sky can scatter different colors at different angles, creating colorful, glowing skies at dusk and dawn.
1_Apprentice
Is that when the sun completely disappears over the horizon? Or is that when the sky turns completely black?