Elastic fiber. Elastic fibers (or yellow fibers) are bundles of proteins (elastin) found in extracellular matrix of connective tissue and produced by fibroblasts and smooth muscle cells in arteries. These fibers can stretch up to 1.5 times their length, and snap back to their original length when relaxed.
Some people think Alaska has less sunlight than other places. The opposite is true. Averaged over an entire year, Alaska gets 10-17 minutes more daylight per day than the rest of the country. If you include civil twilight, Alaska gets 40 minutes more light on average than the rest of the country. Even during those months of the year when Alaska has the same daylight hours as other locations, the days seem longer. That's because the sun rises and sets later in Alaska due to time zone boundaries.
The first day of winter (the winter solstice) is the shortest day of the year and the first day of summer (the summer solstice) is the longest day of the year. In the United States, there are only about 9 hours of daylight on the first day of winter and about 14 hours of daylight on the first day of summer. During the summer months, the further north you go, the arc of solar travel between sunrise and sunset lengthens and the amount of daylight increases.