God's Beauty
by Lisa Wooten
Title
God's Beauty
Artist
Lisa Wooten
Medium
Photograph - Photograph
Description
Sunrise or sun up is the instant at which the upper edge of the Sun appears over the eastern horizon in the morning.[1] The term can also refer to the entire process of the Sun crossing the horizon and its accompanying atmospheric effects.[2]
Contents [show]
Terminology[edit]
"Rise"[edit]
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.[3]
Architect Buckminster Fuller proposed the terms "sunsight" and "sunclipse" to better represent the heliocentric model, though the terms have not entered into common language.
Beginning and end[edit]
Astronomically, sunrise occurs for only an instant: the moment at which the upper limb of the Sun appears tangent to the horizon.[1] However, the term sunrise commonly refers to periods of time both before and after this point:
Twilight, the period in the morning during which the sky is light but the Sun is not yet visible. The beginning of morning twilight is called dawn.
The period after the Sun rises during which striking colors and atmospheric effects are still seen. Sunset or sundown, is the daily disappearance of the Sun below the western horizon as a result of Earth's rotation.
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 sunset is observed.
The spinning Earth lit by the Sun as seen from far above the North Pole. All along the terminator, the rays from the sun hit Earth horizontally, neglecting any atmospheric effects and Earth's orbital motion.
Sunset is distinct from dusk, which is the time when the sky becomes completely dark (apart from artificial light). This occurs when the Sun is about 18 degrees below the horizon. The period between sunset and dusk is called twilight.
Locations north of the Arctic Circle and south of the Antarctic Circle experience no sunset or sunrise on at least one day of the year, when the polar day or the polar night persists continuously for 24 hours.
Sunset creates unique atmospheric conditions such as the often intense orange and red colors of the Sun and the surrounding sky.
Contents [show]
Terminology[edit]
For the terms "civil twilight" and "astronomical twilight", see Twilight#Definitions
Sunset is the point at which the Sun is first completely below the horizon marking the start of twilight. It should not be confused with dusk, which occurs at the end of twilight. Lake Murray is a reservoir in the U.S. state of South Carolina. It is approximately 50,000 acres (200 km�) in size, and has roughly 500 miles (800 km) of shoreline. It was impounded in the late 1920s to provide hydroelectric power to the state of South Carolina. Lake Murray is fed by the Saluda River, which flows from upstate South Carolina near the North Carolina state line. The Saluda Dam (officially the Dreher Shoals Dam) was an engineering feat at the time of its construction. The dam, using the native red clay soil and bedrock, was the largest earthen dam in the world when it was completed in 1930. Lake Murray itself is named after the project's chief engineer, William S. Murray. The Saluda Dam is approximately 1.5 miles (2.4 km) long and 220 feet (67 m) high. Lake Murray is 41 miles (66 km) long, and 14 miles (23 km) wide at its widest point. At the time when the lake was finished, it was the world's largest man-made reservoir.
Since its construction, Lake Murray has been the focal point of the region. Many different communities in four counties are all tied to the lake, and the local history has as much to do with the lake as the lake has to do with the local history. Considering Lake Murray now covers an area that was once populated, the story of what lies beneath its surface is the story of Lake Murray itself.
In addition to serving as a source of hydroelectric power for the region, the lake has become a recreational attraction, with fishing and boating being popular activities. Also, Dreher Island State Recreation Area, located in the Western part of the lake, provides multiple activities�all focused on the lake. Wikipedia
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May 23rd, 2016
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