Bihu Dance : Departmental Freshers (2016) , Geography Department , Naran...

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Causes of Earthquake

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Earthquake:         Earthquake is the sudden and rapid shaking or rolling of the Earth’s surface caused by the release of stress stored in rocks. It is an incidence of tremors / lateral movement or ground displacement caused by pressure dynamics within and below the earth's crust or due to volcanic activity. It is the tremors which are produced by the passage of vibratory waves through the rocks of the earth. The vibration or shaking of the earth’s crust proceeds in the form of waves from the centre of the disturbance.                   The surface where they slip is called the fault or fault plane . The location below the earth’s surface where the earthquake starts is called the hypocenter , and the location directly above it on the surface of the earth is called the epicenter . Taking the earth as a whole earthquakes of one kind or another take place almost every minute, but the great majority of them are so feeble that their occurrence is not felt by man except th
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ZENITHAL GNOMONIC EQUATORIAL PROJECTION FOR THE CONTIENT SOUTH AMERICA AND AFRICA

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EXERCISE :Prepare a graticule on the Gnomonic Equatorial Projection for the continent   of South America at scale 1:150,000,000 and interval 10˚. INTRODUCTION: In gnomonic projection source of light is always in centre of the globe. The equatorial case of the projection is used to represent a hemisphere. The polar case is used to show the northern and southern hemispheres whereas the equatorial case is used to show the eastern and western hemispheres. CONSTRUCTION:   Radious of the reduce earth is 250×10 6 /150× 10 6 = 1.66 // In the diagram - NESQ = the reduced globe EQ = The Equator NAES = The central meridian NOS = The axis of the Earth OE = The radious of the reduced globe. A = Any point on the Earth’s surface at ɸ˚ latitude along the central meridian B = Any point on the Earth’s surface at at θ latitude and θ longitude (Zero). C = Any point on the Earth’s surface at at ɸ˚   latitude and θ longitude TEP = Tangent plane at the equator. 
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PAPER - 604 : ELECTROMAGNETIC RADIATION (EMR)

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Electromagnetic Radiation (EMR) Electromagnetic radiation is a form of energy that is produced by oscillating electric and magnetic disturbance, or by the movement of electrically charged particles traveling through a vacuum or matter. The electric and magnetic fields come at right angles to each other and combined wave moves perpendicular to both magnetic and electric oscillating fields thus the disturbance. Electron radiation is released as photons, which are bundles of light energy that travel at the speed of light as quantized harmonic waves. This energy is then grouped into categories based on its wavelength into the electromagnetic spectrum. These electric and magnetic waves travel perpendicular to each other and have certain characteristics, including amplitude, wavelength, and frequency. Electromagnetic (EM) radiation is a form of energy that is all around us and takes many forms, such as radio waves, microwaves, X-rays and gamma rays. Sunlight is also a form o
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