Efectul laser Laserul este un dispozitiv optic care generează un fascicul coerent de lumină. Fasciculele laser au mai multe proprietăți care le diferențiază de lumina incoerentă produsă de exemplu de Soare sau de becul cu incandescență: * monocromaticitate — un spectru în general foarte îngust de lungimi de undă; * direcționalitate — proprietatea de a se propaga pe distanțe mari cu o divergență foarte mică și‚ ca urmare‚ capacitatea de a fi focalizate pe o arie foarte mică; * intensitate
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LASER TECHNOLOGY: ITS APPLICATIONS A Research Paper Presented To In Partial Fulfillment Of the Requirements for English 2 (Writing in the Discipline) SY 2012-2013 INTRODUCTION Background Information of the Study In our world today‚ there is no such thing that could not be touched by technology. Even a single device can be beneficial and maybe unbeneficial to us humans. Since then‚ lasers are part of our new era of technology. Even the first laser was recognized
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Light Amplification by Stimulated Emission of Radiation LASERS Laser Fundamentals • A laser is a device that generates light by a process called STIMULATED EMISSION. • The acronym LASER stands for Light Amplification by Stimulated Emission of Radiation. • The light emitted from a laser is monochromatic. • Laser emit light that is highly directional. • The light from a laser is said to be coherent. Laser Operation: Excited State Energy Introduction Metastable State Spontaneous Energy
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Sagar Institute of Science & Technology‚ Bhopal Department of Electronics and Communication Major Project On Laser based security system STUDENT’S BY Under the guidance of Satyendra Choudhary Mrs. Deepa Gyanchandani 0187EC101095 Nikhil Solanki 0187EC101066 Contents Introduction Objective Methodology Block Diagram
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The ruby laser‚ first invented in 1960‚ was the world’s first laser. Created by Theodore Maiman‚ the ruby laser is composed of aluminium oxide where some of the aluminium ions have been replaced with chromium ions. These chromium ions are what gives the ruby laser its red color. Its gain medium is a cylindrical crystal. A fully reflecting mirror and a partially reflecting mirror are placed at both ends of the cylindrical crystal. A high intensity lamp is spiraled around the cylinder to produce a
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Laser dentistry is a relatively new form of dental care. Laser Dentistry uses lasers to perform surgery‚ prepare cavities‚ and harden dental resins. This use of lasers has allowed dentists to perform tasks with less pain and with improved results. There are many different types of lasers used in the dentistry field. Theses lasers included the argon laser‚ the diode laser‚ the neodymium: yttrium aluminum garnet (Nd:YAG) laser‚ the holmium: yttrium aluminum garnet (Ho:YAG) laser‚ the erbium: yttrium
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Lasers and Their Uses We have all at some point in our lives used or seen someone use a laser. They are used in compact disc players for stereos or computers‚ laser surgery‚ laser printers‚ holography‚ cutting and borring metals‚ communication‚ bar-code scanners‚ etc. Over the past three decades’ lasers have become a tool used daily by many people and they have become very useful in scientific research. As you can see lasers are a very useful and important tool which is why I have chosen this
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LASER COMMUNICATION SYSTEM Naveen IV Sem‚Dept of Electronics & Communications Sahyadri College of Engineering & Management‚Mangalore ABSTRACT: Laser communication is one of the key area in wireless Communications. This paper includes analysis‚ optimization‚ design and system level development of signal transformation between satellites or any two sources. Which work similarly to fiber optic links‚ except the beam is transmitted through free space. While the transmitter and receiver must
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HISTORY OF INTEL PROCESSORS Today‚ computers are a part of our lifestyle‚ but the first computer that was used was developed at the University of Pennsylvania in the year 1946! It had an ENIAC (Electronic Numerical Integrator And Computer) processor. The reprogramming feature that is so extensively used today‚ was introduced by Alan Turing and John von Neumann with their teams. The von Neumann architecture is the basis of modern computers. From the development of the first microprocessor - Intel’s
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Case Study Meredith: On what main variables has Meredith focused in segmenting its markets? Meredith Corp. uses a combination of decision trees‚ linear and logistic regression‚ and other data-mining techniques to segment customers on the database. Using of regression and database analysis to find the best prospects. According to their Data Base Meredith segmented the markets according to Gender‚ and Female became it’s targeted section. then according to life stages‚ Behavioral segmentation To
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