Introduction 1.1 Scope The aim of this book is to describe how a simple reflecting telescope can be made with the materials and facilities available in India. As the primary goal is to popularize telescope making‚ only the most primitive (but effective) constructions will be considered; the emphasis will be on the practical aspects of telescope making. Some excellent books on this subject are in print (see‚ for example‚ the Bibliography). Yet few people have easy access to these books as they
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Focal length of convex length Aim: to investigate how to measure the focal length of a convex lens‚ by using the lens equation: 1/f=1/u+1/v * Independent variables: * Screen * lens * Dependent variables: * distance between the source of light and the lens “V” which is “X” value * distance between lens and the screen “ Y value” * Controlled variables: * ruler * screen size * source of light * Hypothesis: When the lens is displaced further away from the
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A process for the preparation of racemic phenylethylamine which comprises contacting an optical antipode therefore‚ e.g.‚ L(-) or D(+)-1-phenylethylamine with sodium amide or sodium hydride. Claim: What is claimed is: 1. A process for preparing racemic 1-phenylethylamine which comprises contacting L(-)-1-phenylethylamine or D(+)-1-phenylethylamine with 0.01 to 1 weight percent‚ based on theamount of said phenylethylamine‚ of sodium amide or sodium hydride at a temperature of 70.degree. to 150
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Guided Notes Activity Sheet Type of Microscope Most useful for viewing: Limitations of this microscope are: The microscope works by: Describe the detail that can be seen under this microscope. (You may find it helpful to draw one of the specimens viewed under the microscope.) Dissecting Microscope Organisms or objects at relatively low magnifications. You can only view oranisms that can be seen with the naked eye. It magnifys up to 40 times the size of the specimens serface by passing throught
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Laser Based Communication System. Introduction:- An optical communication system for inter and intra building communications can be built using the following three basic component. A light emitting element. 1. A light emitting element‚ which could be a laser diode or light emitting diode. 2. Transmission media such as optical fiber cable or free space. 3. A light receiving element‚ which could employ avalanche photo-diode‚ PIN photo-diode or any other light sensors like LDR. Since the
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Encoding Information with Light’s Orbital Angular Momentum Light is the future of communication‚ traveling at 3‚000‚000 meters per second‚ the cosmic speed limit of the universe. Its tremendous speed makes it optimal for data transmission. The conventional method to encode information in light is through amplitude modulation‚ i.e. light pulses‚ time division multiplexing‚ i.e. delaying the time light beams enter a channel‚ and wavelength multiplexing‚ i.e. multiple beams of light in one channel
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AP - Lab Report Name: ____________________ Section: ___________________ Using the Microscope Purpose: What is the purpose of this exercise? Is there any safety concerns associated with this exercise? If so‚ list what they are and what precautions should be taken. QUESTIONS: A. The following statements are true or false. If true‚ write a “T” on the answer line. If false‚ write a word or phrase in the blank to make the statement true. __F__ 1) The microscope lens
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Symbolism behind the Phantom of the Opera Throughout the story and the original novel‚ the symbolic use of mirrors abound. I think much deeper it’s dealt with in the original book by Gaston Leroux‚ and somewhat alluded to in different terms in the movie. Nevertheless‚ let’s take a look at the reflection in the mirror and see what’s there. What is a mirror? Basically‚ it’s just a smooth shiny surface that forms an image by reflection. When we gaze into a mirror‚ our reflection returns to us‚ and
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Discovering Cells Directions: answer the following questions using complete sentences. Use pages 6C-13C of your textbook. 1. What are cells? 2. When was the first microscope invented? 3. What is a microscope? 4. What is the difference between a simple and compound microscope? 5. Who was one of the first people to observe cells? 6. What did Anton van Leeuwenhoek discover? 7. A Scanning Tunneling Microscope (STM)
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The "XxXX" formula You have probably noticed a recurrent formula in binocular jargon‚ a formula such as 8x35 or 10x60. This refers to the concrete optical capabilities of the instrument. The number before the "x" represents the magnification power‚ while the number after the letter represents the aperture (or diameter) of the objective lens in millimeters. So a 8x35 binocular‚ for example‚ features a 35 mm lens and can make objects appear eight times closer to you. A 10x50 lens brings things 10
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