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Navigation and Astronomy:
As we have said earlier, by the edd of the Middle Ages, trade on land and over the seas was being Sken up on a big scale. By the fifteenth century, the Turks had acquired a monopoly of trade routes on land. Therefore, new sea routes for trade were being explored. Great voyages were undertaken. We all know about Vasco da Gama, a Portuguese sailor, who reached India in I497 via the Cape of Good Hope in Africa. Around the same time, a great and adventurous voyage was undertaken to sail westward on the Atlantic Ocean in the hope of reaching India. Columbus, an inspired adventurer, though a penniless sailor, was able to obtain the assistance of Portuguese, Spanish, English and French courts to undertake this journey. He reached the continent, later named as America, in 1492 thinking that he had reached India. The adventure, the general excitement and ultimately, the great profitability of these voyages created great enthusiasm for building new ships and instruments for navigation. Interest in astronomy was strongly revived.
Evaporation Highly volatile liquid wastes could be disposed of by effective ventilation. Example : Diethyl et-her. Moderately volatile liquid wastes can be absorbed on
ethane covalent radius
classification of various qualitative & quantitative health management technologies
The ventricular system While the ventricular system is naturally not involved in cognitive processing since it consists of cavities filled with cerebrospinal fluid, it is good to
For moderately volatile liquid wastes : Spillage of moderately volatile liquids could be absorbed on sand, shovelled into bucket(s) and transported to a safe open area for evapora
information about the eyes
How are babys produced
Acid solution weathering Weathering is accelerated by the presence of the hydrogen ions in water. Rain water dissolves CO 2 from air to form carbonic acid, H 2 CO 3 . When t
Objectives After doing this exercise you should be able to: 1. Identify the contents of the gas cylinder by observing the colour code, 2. State the nature of the gas pr
Observing changes of position of the earth with respect to the sun Mark a line on the floor or the wall where the sun shines in your room. Note the exact month, day and hour. A
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