formerly used to make astronomical measurements‚ typically of the altitudes of celestial bodies‚ and in navigation for calculating latitude‚ before the development of the sextant. In its basic form‚ it consists of a disk with the edge marked in degrees and a pivoted pointer. “By measuring the distance of the sun and stars above the horizon‚ the astrolabe helped determine latitude.” Another tool that was
Premium Renaissance Middle Ages Italy
www.jntuworld.com Satellite Communications Reference book: Satellite Communications‚ 3rd ed. Dennis Roddy McGraw-Hill International Ed. www.jntuworld.com www.jntuworld.com 1.1 Introduction Features offered by satellite communications large areas of the earth are visible from the satellite‚ thus the satellite can form the star point of a communications net linking together many users simultaneously‚ users who may be widely separated geographically Provide communications links
Premium Satellite Communications satellite Earth
------------------------------------------------- Rock (geology) In geology‚ a rock is a naturally occurring solid aggregate of one or more minerals or mineraloids. For example‚ the common rock‚ granite‚ is a combination of the quartz‚ feldspar and biotite minerals. The Earth’s outer solid layer‚ the lithosphere‚ is made of rock. Rocks have been used by mankind throughout history. From the Stone Age rocks have been used for tools. The minerals and metals we find in rocks have been essential to
Premium Earth Igneous rock Climate
atlas. • The southernmost point of the Indian Union– ‘Indira Point’ got submerged under the sea water in 2004 during the Tsunami. LOCATION India is a vast country. Lying entirely in the Northern hemisphere (Figure 1.1) the main land extends between latitudes 8°4’N and 37°6’N and longitudes 68°7’E and 97°25’E. 180°W 150° 120° 90° 60° 30°W 0° SIZE The land mass of India has an area of 3.28 million square km. India’s total area accounts for about 2.4 per cent of the total geographical 30°E 60° 90° 120°
Premium India Bay of Bengal
Be able to list and describe the 3 main tools used to measure latitude in early navigation. dsssssssssssssssssssssssssssssssssssssssssssssssssssssssssss- ssssssssssssssssssssssssssssssssssssssssssssssssssfjjjjjjjjj- jjjjjjjjjjjjjjjjjjjjfffffffffffffffffffffffffffffffffffnnnnn- nnnnnnnnnnnnnnnnnnnnnnnnnn waves.jpg (26210 bytes) Heeding the flightpaths of birds was just one of numerous haven-finding methods employed by the Polynesians‚ whose navigational feats arguably have never been surpassed.
Premium Navigation Longitude
captain would be able to calculate the latitude of the ship. Three additional inventions that helped lead to the European exploration was the compass‚ map‚ and the printing press. The compass aids sailors by telling them what direction the ship was going‚ and was invented by the Chinese. The map was invented by the Greco-Egyptian astronomer Claudius Ptolemy‚ who wrote Geography around A.D. 150. This eight-volume book contained maps and the longitude and latitude of approximately 8‚000 places. It also
Premium Europe Age of Discovery Spain
In today’s business environment‚ even many smaller businesses have come to rely on computerized inventory management systems. Automated systems can replace the cost and time consuming processes that were once completed by hand while providing companies with more accurate data. Inventory control is important to ensure control in businesses that handle transactions revolving around consumer goods. Without proper inventory control‚ a store may run out of stock on an important item. A good inventory
Premium Inventory control system Inventory Windows XP
¨Technology’s Impact On The Voyage of Christopher Columbus¨ Throughout time‚ transportation and the technology revolving around it has been nothing but ever changing‚ making certain processes and procedures much more convenient. Christopher Columbus‚ an Italian explorer‚ famous for his voyages and accidental discovery of North America‚ crossed the Atlantic using multiple navigation methods‚ which‚ in comparison to what we have in today’s technological world‚ was fairly basic. During Columbus‘s
Premium United States Christopher Columbus Europe
Introduction Leaves are the most significant photosynthetic tissue for the majority plants and play a crucial role in response to biotic and abiotic disturbances. Leaf shape is seen as one of the most variable and distinct plant traits‚ and variation of leaf morphology can exist among species‚ populations and individuals‚ and within individuals. Because leaves are critical to plant growth and survival‚ it is assumed that the variation in leaf shape represents an adaptive consequence caused by natural
Premium Leaf Plant morphology Photosynthesis
Lightning is not distributed evenly around the planet‚ as seen in the image on the right. About 70% of lightning occurs over land in the tropics where atmospheric convection is the greatest. This occurs from both the mixture of warmer and colder air masses‚ as well as differences in moisture concentrations‚ and it generally happens at the boundaries between them. The flow of warm ocean currents past drier land masses‚ such as the Gulf Stream‚ partially explains the elevated frequency of lightning
Premium Precipitation Electric charge Lightning