19 November 2013 Radar: The Protector of Civilization The invention of the radar was a very significant advance in history. Once the year 1887 passed‚ Heinrich Hertz had developed the principles necessary to conduct a radar by proving radio waves could reflect off metallic objects. Then‚ in 1935‚ Robert Watson-Watt constructed and patented the first radar to show what wonderful things one machine can do. To this date‚ the radar has presented a vast amount of programs that amaze society in many
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Mesopotamia was a polytheistic society that placed great importance on the worship of gods and goddesses. Their association of these gods and goddesses with the forces of nature may have been the result of intense changes in climate that ranged from rainstorms to long term droughts. The Mesopotamian society believed that the city of Babylon was founded by Marduk‚ a hero-god‚ who was the child of the goddess Wisdom. It was believed that Marduk created humans to serve the deities which is reflected in the
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WHAT IF EARTH STOPS SPINNING? As we all know‚ planets spin. Our solar system was formed billions years ago from a spinning cloud of gas and dust. Nowadays‚ the Earth is turning at more than 16 hundreds kilometers an hour‚ bus it’s gradually slowing down about two seconds every one hundred thousand years. BUT WHAT WOULD HAPPEN IF THAT SLOWDOWN SPEEDS UP? If the speed of rotation were reduced by about one kilometer per hour‚ traffic air would face serious consequences. Most commercial aircrafts
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roofing. Green roofing is the best alternative to black tar roofs. They include insulation‚ a waterproof membrane‚ a barrier to keep roots from creating holes‚ a drainage layer‚ a mat for erosion‚ soil‚ and finally the plants. Water runoff during rainstorms easily floods the sewers causing people to become ill. But‚ if building owners were to install green roofs‚ the plants would retain the water causing less runoff‚ and also cool buildings by capturing the precipitation and
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Dried Papaya Leaves as Organic Mulch for Tomato Plants Abstract Mulching in agricultural provides a safe yet equally profitable method of enriching and fertilizing the soil planted with crops. Most often-used mulches are of organic composition‚ such as dry leaves and barks. Unlike synthetic fertilizers and herbicides‚ these organic mulches pose no or little damage to the soil and crops. In this study‚ the effectiveness of dried papaya leaves as organic mulch for tomato was tested. Papaya mulches
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allowing Wellington to get to a more advantageous terrain‚ and pushed the battle to a later time‚ allowing the Prussians more time to regroup. It was a lack of luck that undid Napoleon and his plans for battle. Unfortunately for Napoleon‚ the unlucky rainstorm that brought his demise was a stroke of luck for Wellington which helped him win the battle. Another reason that Wellington won the battle was his use of logistics‚ specifically the terrain. The British armies were on higher ground during the
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age. Eventually‚ he went to study law at the university of Paris. His performance was chosen to deliver a speech to Louis XVI on the occasion of the king’s coronation. But young Robespierre was snubbed. After listening to the address in pouring rainstorm‚ the king and queen left without acknowledging Robespierre in any way. Years later‚ in 1789‚ Robespierre was elected to the estates- general”(225). He also became a chief architect of the Reign of Terror. The Reign of Terror played a significant
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when he was a boy. The shoes have the initials MJ on them‚ so Calvin thinks they belonged to Michael Jordan. Calvin’s sneakers are taken by a bully named Ox who throws them onto an overhead power line. Calvin tries to retrieve them that night in a rainstorm and gets shocked by a lightning bolt.
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will dissolve in water. They need to use the same rocks from the backyard. You can’t compare different types of rocks. Just because it appears to shrink doesn’t mean it actually did. You need real data of what the mass of the rocks were before the rainstorm. 2. Using what Christopher and Kate have already observed‚ suggest a possible hypothesis regarding how the mass of a rock changes when placed in water. Identify the independent and dependent variables. If the rock is placed in water‚ then it’s
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When describing a hurricane there are parts that cannot be left out‚ it’s important to know how these storms start. For a hurricane to start you have to have some type of warm water source and winds that are blowing in the same direction that the hurricane is going‚ after the main ingredients comes the transformation of the rain clouds and wind. The transformation‚ is the change into a tropical disturbance‚ after more wind and more clouds building comes the transformation into a depression‚ the depression
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