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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thermal energy‚ thermal insulator Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Suppose two frying pans have been left on the stove with the burners on. One of the frying pans has a metal handle and the other has a wooden handle. 1. Which handle do you think you could safely touch? ________________________________ 2. Why do you think one handle will be cooler than the other? __________________________ _________________________________________________________________________
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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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Problem Statement Which food gives the most accurate information about the speed of light? Hypothesis I think that the eggs will give me a more accurate result. Procedures: 1. First‚ place the (marshmallows‚ eggs and buttered bread) in the casserole dish‚ completely covering dish. 2. Next‚ put the dish of the (marshmallows eggs and buttered bread) in the microwave and cook on low heat. 3. Heat the food (marshmallows‚ eggs and buttered bread) until it begins to create the hotspots
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down a crowded New York Street you will see a remarkable diversity of your peers‚ but chances are you will pass each other before you can inquire about their relationship status. Is Speed Dating For Me? Are you someone who makes a favorable first impression? It is important to answer this question honestly‚ since speed dating meetings are 3-6 minutes. If first impressions do not come naturally‚ you can research body language. A study of the subtle effects of body positions can empower an individual
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Assignment 1 Question 1 The cash drawer at the local market has room for $20 bills‚ $10 bills‚ $5 bills‚ $1 bills‚ quarters ($0.25)‚ dimes ($0.10)‚ nickels ($0.05)‚ and pennies ($0.01). Create a worksheet that allows a person to enter in how many of each type of bills and coins are in the cash drawer and calculates the total value of the money in the drawer. So for example‚ if the drawer contains two $5 bills and three quarters‚ there would be $10.75 in the drawer. Question 2 At Louis’s Discount
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Business at the Speed of Thought by Bill Gates In 1999‚ with the release of his book “Business at the Speed of Thought” Bill Gates attempted to enlighten the world to the fact that in order to succeed and become leaders in the future‚ businesses throughout the world would have to implement digital technology. The book itself is written entirely from Mr. Gates’ point of view. He wrote it in response to a number of requests from multi level business managers‚ organizational and corporate leaders
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Heat‚ Temperature‚ and Phase Changes Assessment Practice Answer This graph shows what happens to the temperature of the water‚ while it was boiling in a kettle‚ as heat energy was being added to it and what the water was doing will it began to warm and change states. During a phase change‚ the temperature remains mainly constant. This occurs because the heat energy is used to break the bonds between the ice molecules as they turn into a liquid phase. It is possible to constantly
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High Speed Steel * High Speed Steel (HSS) refers to any of a variety of steel alloys that engineers primarily use to construct machine tool bits and blades and drill bits for industrial power tools. Materials scientists can infuse this steel with differing percentages of elements to form a variety of HSS manufacturing alloy types. While all of these different types exhibit HSS’s characteristic resistance to high-temperature‚ the properties of each alloy will vary depending on the percentage of
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Video article # 1 September 24‚ 2014 48 Explosive Speed Drills This video main focus is on improving linear and lateral speed. Throughout the video they show different drills and how they improve your speed‚ they explain how they benefit you and the correct way to get them done. Some of the drills are mainly focused on sports like football and basketball. which benefits some but for track runners such as my self I would have to go beyond just those drills. To improve linear speed they want your
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