Dispersion and the speed of light “So far as problems involving light are concerned‚ the electrons (in atoms) behave as though they were held by springs”.Feynman “In a microscopic but otherwise classical analysis‚ the electric field in electromagnetic radiation accelerates electrons held by springs in the atoms of a piece of glass‚ and these accelerated electrons re-radiate in all directions. The observed light is the superposition of the electric (and magnetic) fields of the incoming
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Physics of Car Crashes INTERNAL - Notes INJURIES TO A HUMAN: During a car crash‚ there are three different collisions that occur. The first one is the collision of the car and the opposing object‚ the second is the human inside the car and the car itself. The final collision is the ones that occur within the human body itself. BRAIN: The human brain is protected by the cranial cavity or the skull. The brain is suspended in a substance called the cerebral spinal fluid‚ which is denser than the skull
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Like all good conspiracy stories‚ the tale of the Gunpowder Plot of 1605 is one that combines elements of mystery‚ intrigue‚ suspense and of course‚ deception. It is the story of a small band of disaffected Catholics who‚ unhappy with the constraints placed on their religion by Protestant monarchs‚ undertake to challenge the religious status quo by committing the ultimate act of terrorism – the destruction of both King and Parliament. Back history The malcontent felt by this group of would-be
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High-speed rail in Taiwan: New experience and issues for future development Yung-Hsiang Cheng n National Cheng Kung University‚ Department of Transportation and Communication Management Science‚ No. 1‚ University Road‚ Tainan City 701‚ Taiwan a r t i c l e in fo Available online 4 November 2009 Keywords: High speed rail Build-operate-transfer Taiwan Integration Transportation impact abstract This study aims to identify some possible issues and challenges for Taiwan’s High Speed Rail (HSR)
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Land Speed Record The land speed record (or absolute land speed record) is the highest speed achieved by a wheeled vehicle on land. There is no single body for validation and regulation; in practice the Category C ("Special Vehicles") flying start regulations are used‚ officiated by regional or national organizations under the auspices of the Fédération Internationale de l ’Automobile. The record is standardized as the speed over a course of fixed length‚ averaged over two runs (commonly called
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Imagine driving on I-75 as cars race by you at a blink of an eye. You are driving 60 miles per hour‚ the speed limit; they must be doing 100 miles per hour or more. This is not an illusion; this is the reality of driving on a highway. Believe it‚ it happens everyday. Cars race down the road at uncontrollable speeds that cause tickets‚ accidents‚ and sadly death. Speed limits are a must for traffic control‚ for safety in neighborhoods and for avoidance of collisions. Traffic control establishes
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Measuring the Speed of Sound and Air using a Pulse-Echo Technique Purpose To determine the speed of sound in air using the pulse-echo experiment procedure‚ and comparing it to the predicted speed of sound in air using the measured air temperature of the classroom. Hypothesis I believe that the speed of sound it the air will be close to that of the predicted value. According to our predicted value‚ we should expect the speed of sound in the air to be at a speed of approximately 346 m/s. Materials
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Argument: Acceleration is caused by two factors‚ mass and force. The graph above shows the relationship between acceleration and force as proportional. As the force upon the car in the experiment increased‚ the acceleration of the car increased by a similar proportional. This complies with Isaac Newton’s second law of motion‚ the law of acceleration‚ which describes acceleration and force as two proportional measures in the equation F (force) = m(mass) x Ac(acceleration)‚ also described in
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“ULTRA SONIC SPEED MEASUREMENT DEVICE” A PROJECT REPORT Submitted in partial fulfillment Of requirements for award of the degree Of BACHELOR OF TECHNOLOGY In ELECTRONICS & COMMUNICATION ENGINEERING By: Nimisha Sharma Nishant Tyagi Gaurav Sharma
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treasured toy‚ a bright red Ferrari Testarossa Hot Wheels car‚ and rolling it back and forth on the glossy‚ white tiled floor of my house. It never left my hands‚ accompanying me to restaurants‚ my grandparent’s house‚ and even Disney World. Somehow‚ the simplicity of this toy car fascinated me. As I entered elementary school‚ I realized that real cars are more intricate and even more fascinating than the ones that fit in the palm of my hand. Each car has a beating heart of its own called an engine. Intrigued
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