- published: 29 Sep 2014
- views: 46752
Sunspots are temporary phenomena on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions. They are caused by intense magnetic activity, which inhibits convection by an effect comparable to the eddy current brake, forming areas of reduced surface temperature. Like magnets, they also have two poles. Although they are at temperatures of roughly 3000–4500 K (2727–4227 °C), the contrast with the surrounding material at about 5,780 K leaves them clearly visible as dark spots, as the luminous intensity of a heated black body (closely approximated by the photosphere) is a function of temperature to the fourth power. If the sunspot were isolated from the surrounding photosphere it would be brighter than an electric arc. Sunspots expand and contract as they move across the surface of the Sun and can be as large as 80,000 kilometers (50,000 mi) in diameter, making the larger ones visible from Earth without the aid of a telescope. They may also travel at relative speeds ("proper motions") of a few hundred m/s when they first emerge onto the solar photosphere.
Robert Clark "Bob" Seger (born May 6, 1945) is an American rock and roll singer-songwriter, guitarist and pianist.
As a locally successful Detroit-area artist, he performed and recorded as Bob Seger and the Last Heard and Bob Seger System throughout the 1960s. By the early 1970s, he had dropped the "System" from his recordings, and he continued to strive for broader success with other various bands. In 1973, he put together The Silver Bullet Band, an evolving group of Detroit-area musicians, with whom he became most successful. In 1976, he achieved a national breakout with the album Night Moves. On his studio albums, he also worked extensively with the Alabama-based Muscle Shoals Rhythm Section, which appeared on several of Seger's best-selling singles and albums.
A roots rocker with a classic raspy, shouting voice, Seger wrote and recorded songs that dealt with blue-collar themes and was an exemplar of heartland rock. Seger has recorded many hits, including "Night Moves", "Turn the Page", "We've Got Tonight", "Against the Wind", and "Like a Rock", and also co-wrote the Eagles' number-one hit "Heartache Tonight". His iconic recording of "Old Time Rock and Roll" was named one of the Songs of the Century in 2001.
Actors: Ian McKellen (actor), Patrick Stewart (actor), James McAvoy (actor), Hugh Jackman (actor), Booboo Stewart (actor), Booboo Stewart (actor), Shawn Ashmore (actor), Peter Dinklage (actor), Michael Fassbender (actor), Michael Fassbender (actor), Shawn Ashmore (actor), Larry Day (actor), Ian McKellen (actor), Hugh Jackman (actor), Omar Sy (actor),
Plot: The ultimate X-Men ensemble fights a war for the survival of the species across two time periods in X-Men: Days of Future Past. The characters from the original X-Men film trilogy join forces with their younger selves from X-Men: First Class in an epic battle that must change the past - to save our future.
Keywords: 1970s, 2020s, based-on-comic, based-on-comic-book, dark-future, dystopia, inbetwequel, marvel-comics, mutant, mutant-woman