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
Premium Laser Light Atom
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
Premium
Conformity Within a Society. In our modern society‚ I believe that conformity is an essential factor for a human to learn and adapt to society’s values. In this society‚ people encourage conforming behavior from an individual. For example‚ our society has some unsaid sets of values‚ and norms‚ which guides an individual to act in a conforming manner. I believe that an individual behaves according to social norms in order to gain acceptance‚ achieve success‚ and be recognized. For example‚ the way
Premium
In an ideal society money would be eliminated because it’s the center of a lot of our society’s problems today. If money were eliminated there would be no social inequality‚ there would be no poverty or anymore starving children‚ men‚ and women. There would also be less violence and crime in this world. Money wouldn’t divide us any longer. We would be valued for whom we are and not by what we wear or what we have or by amount of money in our wallets or bank accounts. Our value would be in ourselves
Premium Sociology Money United States
CHAPTER 13 SEMICONDUCTOR LASERS Pamela L. Derry Luis Figueroa Chi-Shain Hong Boeing Defense & Space Group Seattle ‚ Washington 13.1 GLOSSARY A C c D Dc D d deff dG dg / dN E Ec Eg En E cn En E e Fc F fc fd fo fp Constant approximating the slope of gain versus current or carrier density Capacitance Speed of light Density of states for a transition Density of states for the conduction band Density of states for the valence band Active layer thickness Effective beam width in the transverse direction
Premium Laser
Crime in our Society Essay http://www.wichitasedgwickcountycrimestoppers.com/CrimeTapeSmall.jpg Crime reflects the character of people. This is a painful fact we don’t want to face. There is no effective form to change character. All those qualities in life that makes us what we are also help us become criminals. Heredity and environment‚ interaction of the individual in society‚ the totality of human nature and experience. Crime reflects more than just the pitiful few that commit it‚ it reflects
Premium Crime Drug addiction
Monsters in our Society Today’s society we have a lot of “monsters” such as robbers‚ rapists‚ and killers. That poses as the kind of monsters that put us in harms way. Main reasons as to why we have these monsters are greed. Each generation changes though there can be more or less monsters in every generation. But there are always some crazy‚ wild‚ psychotic people. Killers are the biggest threats to humans. Because it could be the most original and boring person ever who turns out to be
Premium Killer Black-and-white films American films
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
Premium Laser Photon Atom
Bullying in our Society Bullying is nothing new in society. The first portrayal of bullying in literary work was Oliver Twist‚ which was written by Charles Dickens in 1838. Bullying is a very destructive and well-overlooked psychological weapon that is a major issue in this world today‚ especially amongst the youth. Bullying can be described as verbal‚ physical‚ or social behavior that involves the wrong use or abuse of one’s power upon an individual. So‚ what is it that leads a person to bullying
Premium Bullying Abuse
The role of music in our society Nowadays‚ music is not taken into account as it used to be. However‚ how important is it for our society? In this essay‚ I will examine this subject from two different perspectives: the professional musician and the music teacher‚ adding my own views on the status of music today. It is often said that music does not play a significant role for most people but the reality is that it actually plays a very important role in our lives even if we do not notice. It is
Premium Music