• • 1903, Henry Ford began selling his first auto
• • 1903, the first flight at Kitty Hawk
• • 1905, Einstein's first paper on Relativity Theory published
• • 1936, about 200 hundred television sets were in use world-wide
• • 1945, the atom bomb was dropped at Hiroshima
• • 1947, the transistor was invented
• • 1956, the first generation computer introduced
• • 1961, the Berlin Wall went up and the Cold War started
• • 1969, first man on the Moon
• • 1973, first public telephone call placed on a portable cellular phone.
• • 1977, Radio Shack introduced its TRS-80, the first personal computer that I know of
• • 1989, the Berlin Wall came down and the Cold War was over, we think
• • 1991, first WWW browser released to a number of people at CERN

• • invention
• • a break with the past
• • personal freedom
• • improved communication
• • revolutionary thinking

Topic: Astronomy
1. Precession of the equinoxes.
2. A slow gyration of the earth's axis around the pole of the ecliptic, caused mainly by the gravitational pull of the sun, moon, and other planets on the earth's equatorial bulge.