Philadelphia was first settled by the Lenape Native Americans in the early 17th century. The city was founded by William Penn in 1682 as the pro...
Sunset
Twilight
Darkness
Most people know that sunset is the time when the sun goes down. But did you know that the sun doesn't actually set? Instead, Earth rotates into darkness, giving us the illusion that the sun is setting. So what causes sunset?
Well, it's a combination of things. The Earth's atmosphere scatters sunlight in every direction, but blue and violet light are scattered more than other colors. This is why the sky is usually blue during the daytime. As the sun gets lower in the sky, the atmosphere becomes thicker and more dense.
This scattering of sunlight happens to a greater extent, and we see red and orange light more than blue and violet light. That's why sunset is usually a beautiful red or orange color. So next time you see sunset, remember that you're actually seeing Earth rotate into darkness!
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Philadelphia, nicknamed the "City of Brotherly Love," is the largest city in the Commonwealth of Pennsylvania and the fifth most populous city in the United States with over 1.5 million people living in the city. Philadelphia is located in southeastern Pennsylvania and is bounded by Chester County on the west, Delaware County on the north and Reading County on the east. The City of Philadelphia is located in the southeastern corner of the Philadelphia Metropolitan Statistical Area, which is the tenth largest metropolitan statistical area in the United States, with a population of over 9 million.
Philadelphia was first settled by the Lenape Native Americans in the early 17th century. The city was founded by William Penn in 1682 as the provincial capital of Pennsylvania. The city's name was taken from Philadelphia, London, the capital of the United Kingdom at the time. Philadelphia was one of the nation's capitals during the Revolution, and during the Civil War, it served as the capital of the Confederate States of America. In the late nineteenth century, Philadelphia began to expand westward, and in 1900, the city annexed the western portions of the then-independent borough of Camden, which had been a separate city since 1792. Philadelphia reached its current population of over 1.5 million people in the 1970 census.
The City of Philadelphia's economy is based on banking, health care, manufacturing, information technology, universities, and tourism. A number of Fortune 500 companies have their headquarters in the city, including Comcast, PECO Energy, Aramark, and DuPont. Philadelphia is also home to the National Constitution Center, the third-largest museum in the United States, and was the host city for the Democratic National Convention in 2016.
Some of Philadelphia's most popular cultural attractions include the Philadelphia Museum of Art, the Ben Franklin Institute, the Philadelphia Orchestra, the Philadelphia Museum of Natural History, and the Reading Terminal Market.aryl vandenberg
Philadelphia is located in southeastern Pennsylvania and is bounded by Chester County on the west, Delaware County on the north and Reading County on the east. The City of Philadelphia is located in the southeastern corner of the Philadelphia Metropolitan Statistical Area, which is the tenth largest metropolitan statistical area in the United States, with a population of over 9 million.
Philadelphia was first settled by the Lenape Native Americans in the early 17th century. The city was founded by William Penn in 1682 as the provincial capital of Pennsylvania. The city's name was taken from Philadelphia, London, the capital of the United Kingdom at the time. Philadelphia was one of the nation's capitals during the Revolution, and during the Civil War, it served as the capital of the Confederate States of America. In the late nineteenth century, Philadelphia began to expand westward, and in 1900, the city annexed the western portions of the then-independent borough of Camden, which had been a separate city since 1792. Philadelphia reached its current population of over 1
}As the sun sets, the sky slowly grows dark. For many people, this is a time to relax and wind down for the day. But have you ever wondered exactly when it gets dark? The answer may surprise you.
Did you know that darkness actually begins long before the sun sets? As the sun gets lower in the sky, its light has to travel through more atmosphere. This filters out some of the blue light, making the sun look redder. At the same time, shadows get longer and darker. So by the time the sun finally dips below the horizon, darkness has already begun to fall.
Of course, not all places on Earth experience darkness at the same time. Near the equator, the sun sets and rises almost directly overhead. This means that there is less of a difference between daytime and nighttime. Closer to the poles, however, the sun stays low in the sky for much of the year. This leads to longer periods of darkness during wintertime.