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    Doppler Effect Essay

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    Maxim Gurevich Doppler Effect Physics IA Introduction The Doppler Effect is a wave phenomenon that can be heard every day. It affects different sound differently depending on their sources’ speed relative to the observer. I noticed this when I observed that if the source moves too slowly, the effect is less apparent. I wanted to explore this situation, and to fulfill my curiosity, I used a sound emitter traveling in a circle. I asked this question: “How does the angular velocity of a sound emitter

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    Doppler radar Meteorologists and weather analysts use the Doppler Effect to read weather events. In this case, the fixed transmitter is located at a weather station and the moving object being studied is a storm system. This is what happens: 1. Radio waves are emitted from the transmitter at the weather station at a specific frequency. 2. The waves are large enough to interact with clouds and other atmospheric objects. The waves strike the atmospheric objects and bounce back toward the receiver at

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    The present paper discusses the relativistic Doppler effect and tries to found misunderstandings in the present state of the Special theory of relativity. The author's conclusion that he found some “blue shift” which contradicts with time dilation is wrong. The weakest feature of the paper is that although the formulas, presented by authors, are in general correct, but they do not support the conclusions the author extract from them, and mistake is hidden in the interpretation. Let's focus on the

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    frequency at about 20kHz when the sound is no longer audible and above the frequency disturbance, this is know as ultrasound. The first major breakthrough in the evolution of high frequency echo-sounding techniques came when the piezo-electric effect in certain crystals was discovered by Pierre and Jacques Curie in Paris in 1880. The turn of the century saw the invention of the Diode (component that restricts the direction of movement, allows an electric current to flow in one direction)

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    consists of? What's it made out of, what type of weather patterns are there, what does a hurricane look like, or other natural phenomenon's of today's weather ? Well America, hopefully now we can! Meteorology is the study of the atmosphere and the effects it has on our weather. Climatology focuses on how atmospheric changes alter the world’s climates, aeronomy is the study of the upper parts of the atmosphere. Meteorology focuses on the lower parts of the atmosphere, primarily the troposphere, where

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    Christian Doppler: A Biography Have you ever wondered why a car is much louder coming towards you, than it is going away from you? Or, have you been baffled at how loud an ambulance siren is before it passes you, only for it to be much quieter going away from you? This trend has been dubbed the “Doppler Effect” and was named after proclaimed physicist Christian Doppler. Through years of schooling and many more years of teaching, Doppler was able to amass plenty of credibility in the field of science

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    The Speed of "Sound": is actually the speed of transmission of a small disturbance through a medium. The speed of sound (a) is equal to the square root of the ratio of specific heats (g) times the gas constant (R) times the absolute temperature (T). a = sqrt [g * R * T] Sonic Boom Sound generated by airflow has been around and reasearched for a long time. The increased use of fluid machines and engines has led to an increasing level of noise generation, and hence to an increasing interest

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    Exoplanet Research Paper

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    1. What are exoplanets? Exoplanets are planets out with of our solar system, which orbit stars which are not our Sun. 2. Why can’t we detect exoplanets by direct observation? Even using telescopes, we cannot directly observe exoplanet as these exoplanets are too close to their star in which they orbit, in terms of the perspective we have on Earth. 3. What are the main ways in which exoplanets can be detected? Exoplanets are easier to observe through indirect observation. These take three main

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    self deafening. The bat then uses the doppler effect to tune the echo back into its range. The doppler effect applies to objects in motion, such as a car passing by. As the car approaches the frequency of the sound is higher than the sound being emitted by the car, as the car passes the frequency is the exact same, and then the frequency gets lower as the car drives away. Bats use this to their advantage so that they can locate their prey. The doppler effect is used in radar guns as well. The bat

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    Carrier Aggregation in LTE-Advanced

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    A. ASYMMETRIC CA To ameliorate the spectrum capacity in LTE-Advanced systems asymmetric carrier aggregation should be supported in the uplink and downlink channel; meaning that the number of aggregated component carriers in the downlink channel is different from the number of the of aggregated component carriers in the uplink channel. Asymmetric CA procures ambiguity to the LTE-Advanced eNB in downlink component carrier selection because during a random access process, identifying the downlink component

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