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Who invented satellites?

In 1960, the United States launched a communications satellite into space named ECHO, which allowed users to communicate with one another by bouncing radio signals off its exterior. The ECHO was a passive satellite and was not capable of transmitting its own radio signals. The first true active communication satellites, which were named the RELAY and TELSTAR, were launched by the United States in 1962 and were capable of transmitting and receiving radio signals from Earth.

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How would you compare and contrast Athens and Sparta?

Athens and Sparta both featured an elected assembly, but Athens' executive leaders, the archons, were also elected from the people, while Sparta featured two kings that ruled until death, or until being forced out.\nSpartan life focused on building obedience and preparing for war. From a young age, boys were taken from their homes and taught to grow up and be warriors, and girls learned how to be the mothers of warriors. The practice of slavery meant that the free young men could focus on military training while slaves ran the industrial and household duties.\nAthenian life was much diffe..

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Who invented jewelry?

Besides the ancient nassarius shell beads, ancient necklaces and bracelets made of bone, wood, stone and various animal teeth and sinew are considered to be very early examples of jewelry being worn by human ancestors. Originally designed for the practical purpose of fastening clothing together, jewelry evolved steadily over time and many cultures to reflect fashion, decoration and even social status.\nIn ancient Egypt, it was common for the wealthy to exhibit their power materialistically through jewelry, particularly items made from gold. Jewelry also has a long history of religious symbolis..

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How did Scotland Yard get its name?

The official name of Scotland Yard is the Metropolitan Police Force. This force serves most of the greater London area except for the City of London, which is served by the City of London Police. As of 2014, the current headquarters building carries the name New Scotland Yard, as have all of the headquarters buildings since the force's first move in 1890.

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When did the Confederate States rejoin the Union?

In 1868, Alabama, Arkansas, Florida, Georgia, Louisiana, North Carolina and South Carolina were readmitted to the Union. Georgia, however, promptly forced all the black Americans out of their state legislature, which forced the U.S. Government to reinstate martial law. It was once again admitted back into the Union in 1870 along with the final former Confederate states of Texas, Virginia and Mississippi.

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What date did World War 2 End?

World War 2 began in September 1939 when Hitler invaded Poland. The British Prime Minister Neville Chamberlain told Adolf Hitler to remove his troops from Poland or Britain, and France would declare war on the Germans. Hitler refused, and on September 2, 1939 war was officially declared on the Germans. The following day, the first British ship, the Athenia, was sunk by Germany. Over 45 million civilians died in World War 2, and over 16 million members of the military.

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What is the history of the Adak Naval Station?

The Adak Naval Station was a useful military operation site not only during World War II but also during the Cold War. The site was used as a submarine surveillance center during this time and became a naval air station during the same period.\nThe Adak Naval Air Station eventually encompassed over 17,000 acres of Adak Island. Military operations throughout the years resulted in the release of hazardous chemicals through spills and historical disposal practices. Since the military mission at the site ended in 1997, the Navy has been involved with the clean-up and environmental restoration effo..

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What role did women play in the French Revolution?

Women fared differently during different phases of the French Revolution and not all women participated in the same way or had anywhere near the same views of the Revolution itself. This was particularly true of aristocrats like Marie Antoinette, who was famously executed along with her husband, King Louis, during the Revolution. Many women attempted to participate in revolutionary activities, although this was met with mixed success. In a successful group of political action by women, a large group of angry women gathered for the March to Versailles, an early event in the Revolution that was ..

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Who was Nebuchadnezzar?

Nebuchadnezzar is believed to have been born in 634 B.C. and to have risen to the throne of Babylon in 604 B.C., at the age of 30. He engaged in a number of military campaigns aimed at increasing the territorial expanse and power of his empire. Nebuchadnezzar also financed expansive construction projects in his capital of Nineveh, including the building and rebuilding of temples and both an underground tunnel and stone bridge designed to span the Euphrates River.\nNebuchadnezzar is probably best known for his infamous appearance in the Bible. He is the one assumed to have been responsible for ..

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How much did the first commercially used computer weigh?

The UNIVAC I was a large machine of 25 feet by 50 feet in length. It was the first computer to use buffer memory and it was outfitted with a magnetic tape unit. J. Presper Eckert and John Mauchly designed the computer. It used 5,200 vacuum tubes was able to perform approximately 1.905 operations per second. The machine was used for payroll and other business purposes by many companies and it remained in use until 1970.

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