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Why is the Sun's corona so much hotter than the Sun's surface? (more unsolved problems in astronomy) The temperature of the photosphere is approximately 6,000 K, whereas the temperature of the corona reaches 1,000,000–2,000,000 K. The high temperature of the corona shows that it is heated by something other than direct heat conduction from the photosphere. It is thought that the energy ...
Israel, officially the State of Israel, is a country in the Southern Levant region of West Asia.It is bordered by Lebanon to the north, Syria to the northeast, Jordan to the east, the Red Sea to the south, Egypt to the southwest, the Mediterranean Sea to the west, and the Palestinian territories – the West Bank along the east and the Gaza Strip along the southwest.
The states and territories included in the United States Census Bureau 's statistics for the United States population, ethnicity, and most other categories include the 50 states and Washington, D.C. Separate statistics are maintained for the five permanently inhabited territories of the United States: Puerto Rico, Guam, the U.S. Virgin Islands ...
Steam is injected into many oil fields where the oil is thicker and heavier than normal crude oil. This sketch illustrates steam flooding.. Steam injection is an increasingly common method of extracting heavy crude oil.
ESPN (an abbreviation of its original name, the Entertainment and Sports Programming Network [2]) is an American international basic cable sports channel owned by The Walt Disney Company (80% and operational control) and Hearst Communications (20%) through the joint venture ESPN Inc. The company was founded in 1979 by Bill Rasmussen, Scott ...
A tuner for recording off-air television programmes. A clock with timer for unattended recordings. A modulator to allow connection to a normal (for the time) television receiver without audio and video input connectors. The Philips VCR system was marketed only in the U.K., mainland Europe, Australia and South Africa.
That year, Jordan was the only Washington player to play in all 82 games, starting in 67 of them, and coming from off the bench in 15. He averaged 20.0 ppg, 6.1 rpg, 3.8 assists, and 1.5 spg per game. He also shot 45% from the field, and 82% from the free-throw line.
Development XV-15 experimental tiltrotor, 1980 Early concept illustrations of V-22 In the late 20th century VTOL aircraft gained popularity, and many prototype designs were developed, but only one entered service; the Harrier fighter/attack jet used a turbo fan engine. A practical tilt-rotor remained more elusive, until finally in the 1980s the United States moved forward with V-22 design ...