Category Archives: Class Notes

Diastrophism

Diastrophism, also called tectonism, large-scale deformation of Earth’s crust by natural processes, which leads to the formation of continents and ocean basins, mountain systems, plateaus, rift valleys, and other features by mechanisms such as lithospheric plate movement ( plate tectonics), volcanic loading, or folding. All processes that move, elevate or … Continue reading

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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

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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

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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

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