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Geometry and Astronomy:
The need to portray an ideal world of perfect forms and proportions led to the development of geometry by Pythagoras (583-500 B.C.) and Hippocrates of Chios (about 450 B.C.) (Fig.). 'The latter occupied himself with the solution of problems which were unanswered for a long time. such as squaring the circle and doubling the cube. He failed in both. but opened the w;ly to study the geometry ofcurves. Eudoxus (408-355 B.C.) was probably the greatest Greek matliematician and he was able to explain the motion of sun, moon and plancts by means of sets of concentric spheres, each rotatingabout an axis fixed in the one outside it (Fig. 3.12). The model wascrude, and too simple to explain observed facts, even as known at that time. But the sets of actual metal spheres based on this mode provided the basis for most of the astronomical instruments for a long time.
describe briefly the scientific and technical achivement of the bronze age
Nature of scientific knowledge: Science, as we have seen, is inseparable from the rest of human endeavour. In the past few thousand years of human history, an immense fund of
How long will it take me to get my ged.
To study the formation of a drop of liquid Gently pour aniline into a large beaker of cold water unless a layer about half an inch deep accumulates at the bottom. Place the bea
INTRODUCTION : You read about the fire hazards, general precautions and remedial measures in case of an outbreak of fire in the previous unit. In this unit you will learn about t
1. The output of a single neuron is given by y = f(w 1 x 1 +w 2 x 2 +w 0 x 0 ), where x 1 and x 2 are inputs, x 0 has the constant value 1, w 0 , w 1 and w 2 are parameters
Define Natural killer cells (NK cells) They are large sized lymphocytes, specifically equipped to kill virally infected cells, some of the virally infected cells acquire a spec
Objectives After studying this unit you should be able to: 1. explain the significance of the fire triangle, 2. list common causes of fire, 3. describe the purpose
Metabolism All of the organized chemical reactions in a cell which are under the control of enzymes.
greatest refraction of light is caused through
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