Exhibit 19.4
Yuri Gagarin, the first man in space
On April 12, 1961, the Soviet scientists sent the
first man, Major Yuri Gagarin in the spacecraft Vostok II into orbit.
On February 20, 1962, the first American Lieutenant Colonel John
H. Glenn Jr. manned the spaceship Friendship 7 into orbit.
On July 20, 1969, two American astronauts, Neil Armstrong and Edwin
E. Aldrin Jr. landed on the moon.
Exhibit 19.5
The US flag is placed on the moon.
Technological innovations helped to improve the
quality of life in the modern world. Mechanical sewing was introduced
by an American Isaac Singer, with the help of a sewing machine in
1851. The steam-driven printing press was introduced in 1813 by
two Germans, Friedrick Koenig and Andrew Baver. Ottmar Mergenthaler
invented the linotype printing technique. In 1867, an American,
Christopher Sholes invented the typewriter and the Remington factory
bought the manufacturing rights. Joseph Niepce discovered the method
of making permanent photographic images. The American George Eastman,
invented the "Kodak" camera.
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Index
Introduction
19.1 - Achievements In Physics
19.2 - Achievements In Chemistry
19.3 - Achievements In Biology
19.4 - Achievements In Medicine And Surgery
19.5 - Innovations In Transport And Communication
19.6 - Dates & Events
Chapter 20
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