The median income for a household in the city was $34,583, and the median income for a family was $44,615. Males had a median income of $33,844...
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!
Mc Calla is a city in and the county seat of Calla County, Oklahoma, United States. The population was 1,910 at the 2010 census.
The city was first settled in the early 1870s by a party of Sooner and Pawnee Indians led by Chief White Cloud. The first post office opened in the area on March 21, 1875. The name was derived from the calla lily, which was abundant in the area.
Mc Calla lies at the base of the Wichita Mountains National Wildlife Refuge and is irrigated by the McCalla River. The surrounding countryside is dotted with numerous small oil and gas wells.
Mc Calla is home to Oklahoma State University's School of Veterinary Medicine.
According to the United States Census Bureau, the city has a total area of , of which is land and is water.
As of the census of 2000, there were 1,898 people, 737 households, and 470 families residing in the city. The population density was 870.8 people per square mile (336.9/km²). There were 892 housing units at an average density of 477.5 per square mile (184.9/km²). The racial makeup of the city was 98.21% White, 0.28% Native American, 0.08% Asian, and 1.12% from two or more races. Hispanic or Latino of any race were 0.72% of the population.
There were 737 households out of which 27.9% had children under the age of 18 living with them, 55.1% were married couples living together, 9.8% had a female householder with no husband present, and 32.8% were non-families. 28.1% of all households were made up of individuals and 11.4% had someone living alone who was 65 years of age or older. The average household size was 2.48 and the average family size was 3.03.
In the city, the population was spread out with 23.0% under the age of 18, 7.8% from 18 to 24, 25.9% from 25 to 44, 27.5% from 45 to 64, and 15.6% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 94.2 males. For every 100 females age 18 and over, there were 89.2 males.
The median income for a household in the city was $34,583, and the median income for a family was $44,615. Males had a median income of $33,844 versus $21,875 for females. The per capita income for the city was $20,461. About 7.9% of families and 11.5% of the population were below the poverty line, including 16.6%
}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.