Unit 1 - davis.k12.ut.us
... The two most abundant types of marine sediment are which comes from rocks, and ...
... The two most abundant types of marine sediment are which comes from rocks, and ...
Tudor_Navigation
... primarily the Pole Star in Northern latitudes. The instrument used for this purpose in the period of the Mary Rose would have been either an astrolabe or more likely, a cross staff. In conjunction with astronomical tables published in Lisbon in 1509, the latitude of a ship could be reasonably accur ...
... primarily the Pole Star in Northern latitudes. The instrument used for this purpose in the period of the Mary Rose would have been either an astrolabe or more likely, a cross staff. In conjunction with astronomical tables published in Lisbon in 1509, the latitude of a ship could be reasonably accur ...
幻灯片 1
... 2. In what times did the two countries meet with each other? In 97 AD, Gan Ying, a Chinese ambassador went to the East Roman Empire over land. In the 11th century, the Africans made several voyages to the court of the Song Dynasty. In the years between 1405 and 1433, seven large treasure fleets s ...
... 2. In what times did the two countries meet with each other? In 97 AD, Gan Ying, a Chinese ambassador went to the East Roman Empire over land. In the 11th century, the Africans made several voyages to the court of the Song Dynasty. In the years between 1405 and 1433, seven large treasure fleets s ...
History of navigation
The history of navigation is the history of seamanship, the art of directing vessels upon the open sea through the establishment of its position and course by means of traditional practice, geometry, astronomy, or special instruments. A few peoples have excelled as seafarers, prominent among them the Austronesians, their descendants the Malays, Micronesians, and Polynesians, the Harappans, the Phoenicians, the ancient Greeks, the Romans, the Arabs, the ancient Tamils, the Norse, the ancient Bengalis, the Chinese, the Venetians, the Genoese, the Hanseatic Germans, the Portuguese, the Spanish, the English, the French, the Dutch and the Danes.