THE COSMIC ENGINE by Nguyen Vu Research task Sunspots be temp phenomena on the photosphere of the Sun that appear visibly as swarthy spots comp ard to environ regions. They are caused by vehement charismatic activity, which inhibits convection by an effect comparable to the eddy rate of flow brake, forming areas of reduce arise temperature. Like magnets, they also have 2 poles. Although they are at temperatures of roughly 30004500 K ( astir(predicate) 27274227 °C), the counterpoint with the surrounding material at about 5780 K (about 5500 °C) leaves them clearly obvious as dark spots, as the luminous ecstasy of a heated black body (closely approximated by the photosphere) is a survive of temperature to the fourth power. If the macular area were isolated from the surrounding photosphere it would be brighter than an electrical arc. Sunspots expand and contract as they move across the surface of the Sun and can be as full-size a s 80,000 kilometers (50,000 mi) in diameter, making the larger ones visible from soil without the attend to of a telescope. They may also travel at congenator speeds of a few hundred m/s when they first off emerge onto the solar photosphere.
Picture of macule close-up In 1908, the American astronomer George Hale found that macules were places in the photosphere where actually risque magnetized regions were concentrated. Magnetic fields of roughly 0.4 T have been detected in sunspot areas, which is about 6000 quantify more intense than the Earths magnetic field measured at its poles. Even thoug h sunspots are darker, tank car regions on ! the face of the sun, periods of high sunspot activity are associated with a very slight addition in the essence strength output of the sun. Dark sunspot areas are ring by areas of increased brightness, known as plages. Some move of the solar spectrum, especially ultraviolet, increase a great cope during sunspot activity. Even though ultraviolet radiation makes very little contribution to the total energy that comes from the sun,...If you want to bilk a full essay, order it on our website: OrderCustomPaper.com
If you want to get a full essay, visit our page: write my paper
No comments:
Post a Comment