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Category Archives: Class Notes
History of Astronomy: An Overview
There is little recorded information on early man’s impression of the heavens, some drawings of eclipses, comets, supernovae such as the Pueblo Petrograph. Early man was frightened/overwhelmed by the sky. The earliest recorded astronomical observation is the Nebra sky disk … Continue reading
Tourism in Garhwal Himalayas: An Introduction
The ancient history of Garhwal says that it had once been a part of the Mauryan Empire.The history of Garhwal began as a unified whole in the 15th century, when king Ajai Pal merged the 52 principalities of the Garhwal … Continue reading
Posted in Class Notes, earth, Tourism and Travel
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Various Uses of Sextant and How it Works
Even today big ships are all required to carry working sextants and the navigating officers have regular routines to keep themselves familiar with making it work. Despite all the Global Positioning Satellites, gyro compasses and radio communications it is at … Continue reading
History of Sextant
How do navigators use the stars, including our sun, the moon, and planets to find their way? Well, for at least two millennia, navigators have known how to determine their latitude — their position north or south of the equator. … Continue reading