detection was in 1953.[1] EME communication tech has many challenges to make it hard to achieve. The first challenge is the path loss. The distance between the moon and earth is 380000 kilometres‚ so the whole path distance is 770000 kilometres. The albedo of the moon is very low‚ that signals return from the moon maximally 12% but usually closer to 7%. A radio signal from send and return takes about 2.5 seconds. As the path loss is 252dB‚ it is easy to think out how hard it is to build an EME communication
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Incomprehensible measures about high temperature will northern Europe‚ should close down. Considerable territorial cooling permitted the glaciers about europe to extend. Those ice reflected sunlight‚ which triggered further cooling through the ice-albedo reaction. However‚ those orbital progressions which control glacial cycles inevitably overwhelmed this sentiment. Warming resumed‚ and the current interglacial period
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EE8093 Energy Devices for 8093 Sustainable Urban Environment Environment A/P Terence Wong Division of Microelectronics School of Electrical and Electronic Engineering Office: S2-B2c-103 Email: ekswong@ntu Email: ekswong@ntu.edu.sg EE8093 Energy Devices 1 Course objectives Course objectives This energy minor course shows how technological gy solutions can contribute to solving environmental problems in the context of cities The basic operating principles and applications
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velocity | 11.186 km/s[3] | Sidereal rotation period | 0.99726968 d[16] 23h 56m 4.100s | Equatorial rotation velocity | 1‚674.4 km/h (465.1 m/s)Template:Convert/track/abbr/onTemplate:Convert/track/adj/[17] | Axial tilt | 23°26’21".4119[2] | Albedo | 0.367 (geometric)[3]0.306 (Bond)[3] | Surface temp. | min | mean | max | Kelvin | 184 K[18] | 288 K[19] | 330 K[20] | Celsius | −89.2 °C | 15 °C | 56.7 °C | | Atmosphere | Surfacepressure | 101.325 kPa (MSL) | Composition | 78.08% nitrogen (N2)[3] (dry
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Is climate change naturally or man-made? First of all‚ for anyone that does not know what climate change is‚ it is a change in the world’s climate. A lot of people think weather and climate is the same thing but it is not. The difference between weather and climate is a measure of time. Weather is what conditions of the atmosphere are over a short period of time. Climate is what the conditions are over relatively long periods of time. My belief of the issue is that climate change is man-made
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Many urban centers have been known to be places where diverse styles of structural development are put in place through individual differences‚ desires and expression of wealth which over the time have brought about the use of series of finished construction materials. The constant increase in the rate of urban development‚ the use of materials and some of the construction style; have their contributing impact on the environment. These impacts of “growth in urban areas affects urban climate in several
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Vostok Lab Report Title: Global warming‚ a natural interglacial change on temperature. Abstract: Global warming has been widely discussed all around the world as it is an issue that affects the living of all mankind in the world. It is argued that the ‘anthropogenic’ changes posse more influence on the climate change to the Earth‚ compared to the ‘naturally driven’ glacial and interglacial changes in temperature. This report is based on the Vostok Core by faculty at Columbia University as
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is so cold in Antarctica. This sun that does reach Antarctica doesn’t even make much use‚ you may see a picture of a sunny Antarctica which it often is but it is not hot. The Albedo is a measure of how reflective a surface is and is measured from 0 (no radiation reflect to 1 (all radiation reflect) and Antarctica has an Albedo of 0.9 al the time. This means that the radiation that does get to Antarctica is reflected‚ this makes it very‚ very cold! It also has blizzards often with Antarctic winds falling
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Within the past few decades‚ there has been no political or public discussion as heated and controversial as the debate over climate change. Climate disputes can be traced back all the way to 1837‚ when Louis Agassiz proposed a theory claiming that Switzerland had once been covered with large ice sheets‚ and have become a big part of the international scientific community since then (Archer and Rahmstorf 2010). Today‚ climate change is not only a scientific issue‚ but it has grown into an economic
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Site hosted by Angelfire.com: Build your free website today! ESSAY: Using examples from the industrialised and developing world‚ explain how and why we should conserve woodlands & forests Forests and woodlands provide many social‚ economic‚ and environmental benefits. In addition to timber and paper products‚ forests provide a wildlife habitat and recreational opportunities‚ prevent soil erosion and flooding‚ help provide clean air and water‚ and contain tremendous biodiversity
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