EARTH 10 Lecture Notes - Lecture 17: Falkland Islands, Cape Horn, Lozier
Document Summary
Magellan"s voyage around the world: new route to west indies. 1519 - magellan sails from spain in search of westerly route to the indies. 1578 - francis drake passes through straights of magellan. 1592 - john davis discovered falkland island: crew forced to eat ~14,000 penguins to survive. 1675 - antonio de la roche is blown south of cape horn. 1739 - jean baptiste bouvet de lozier discovers bouvet. Sent to observe and record transit of venus across the sun. Pair of transits 8 years apart every 243 years. Helped determine distance from earth to sun. Cook claimed new zealand and eastern australia for great britain. Prior to cook"s day, not possible to measure longitude at sea. Sextant used to measure angle of celestial body. John harrison invented a sea clock called a chronometer (kept perfect time under rough sea conditions) 109 days from london to cape town. Voyage lasted 3 years and 8 days covered >60,000 miles.
