Bethlehem experiences a cold winter climate, with mild temperatures in the summer. The city has a relatively low crime rate and a below-average...
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!
Bethlehem is located in the Lehigh Valley region of Pennsylvania. The city is about 80 miles north of Philadelphia, 54 miles south of Allentown, and 64 miles east of Easton. Bethlehem is the largest city in the Lehigh Valley and the 18th-largest city in Pennsylvania.
Bethlehem has a population of about 83,000. The city's main economic sectors are healthcare, education, and manufacturing. The city has a strong manufacturing tradition and ranks third in Pennsylvania in terms of manufacturing jobs. Bethlehem also has a strong healthcare industry. The city has several hospitals and health clinics, as well as numerous medical technology companies.
Bethlehem experiences a cold winter climate, with mild temperatures in the summer. The city has a relatively low crime rate and a below-average unemployment rate. The city's economy is relatively healthy, with a strong manufacturing sector and a growing healthcare industry. Bethlehem is served by the Pennsylvania Turnpike and the I-78 and I-82 highways.
}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.