Street Light Replacement
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Confidential Ssociates a History of Energy Part I
Winter 2014 Luthin Confidential ssociates A History of Energy Part I History of Lighting - Part 1 It wasn’t until the late In the early 1800s, gas M el Brooks’ 2000- 1700’s that European light (initially at less than Inside this issue: year old man used oil lamps (at ~0.3 lu- 1 lumen/watt), used coal torches in his cave, but mens/watt) became gas or natural gas from History of Lighting Part 1 1 today’s lighting is a tad widely available and mines or wells, and was more sophisticated, accepted due to im- relatively common in ur- How to Become A Producer 2 having gone through provements in design ban England. Its use ex- half a dozen stages, and the whaling indus- panded rapidly after the Can Spaceballs Be Shot Out 3 each producing more try’s ability to produce development of the incan- of Earth Tubes? light out of less energy sperm oil. That refined descent gas mantle around i.e., efficacy, than its product burned cleanly, 1890. That device more High (Voltage) Anxiety 3 predecessor. didn’t smell too bad, than doubled the efficacy and was relatively (to 2 lumens/watt) of gas On A Personal Note 4 Torches made of moss cheap compared to lighting, using a filament and animal fat, and commercially-made containing thorium and and the power industry adopted crude oil lamps were candles. cerium, which converted it as a standard. During this the mainstay for indoor more of the gas flame’s period, Nikola Tesla, and oth- lighting until the pro- The Industrial Revolu- heat into white light. -
Street Light/Traffic Signal Crew Supervisor
CITY OF SALINAS STREET LIGHT/TRAFFIC SIGNAL CREW SUPERVISOR BARGAINING UNIT/CLASS CODE: SEIU SUPV. / P06 DEFINITION To assume substantial responsibilities for the daily supervision of a crew in the Street Division of the Maintenance Services Department; and to perform a variety of skilled electrical work in the installation, maintenance, and repair of signal systems and street lights; performs other related work as required. DISTINGUISHING CHARACTERISTICS This is the advanced journey and hands on, supervisory class. Positions in this class exercise daily supervision of assigned personnel under the direction of Street Maintenance Manager. It is distinguished from the Public Service Maintenance Worker IV by the greater extent of the supervisory responsibility and lead supervision over a crew. This position is expected to perform many of the advanced technical skill activities in the repair and maintenance of streetlights and traffic signals. It is distinguished from the Street Maintenance Manager in that it does not have full responsibilities for organizing and assigning work, and changing work procedures, program development and recommending employee selections, promotions or discipline. SUPERVISION RECEIVED AND EXERCISED Receives direction from the Street Maintenance Manager. Exercises functional supervision over assigned staff. ESSENTIAL JOB FUNCTIONS OF THE POSITION Duties may include, but are not limited to the following: Coordinate with the Street Maintenance Manager in organizing and planning work assignments. Supervise, train and evaluate subordinate employees. Assign specific tasks to individuals and crew to accomplish assigned work. Lead a street light/traffic signal maintenance and installation crew. Assist the Street Maintenance Manager with administration of division activities; keep records, prepare reports, estimate job costs, order materials, evaluate work procedures. -
Those Magnificent Chandeliers We Are
Those Magnificent Chandeliers We are blessed with a beautiful church, “a model of elegance and good taste” The Mecklenburg Times announced in April 1895 in anticipation of the re-opening of the First Presbyterian Church in Charlotte following an extensive and quite expensive (just over $30,000) rebuilding and remodeling of the church. One of the new and much anticipated features of the 1894-1895 remodeling was the installation of three very large and exquisitely ornate chandeliers. “The First Presbyterian Church is to have the handsomest chandeliers in the State”, revealed the Daily Charlotte Observer in a sneak preview in 1894. Prior to the remodeling, First Presbyterian had been regarded as one the most dimly lit churches in Charlotte, having only 39 lights in total. The Session decided as early as 1888 that new lighting, and lighting with electricity, was highly desirable and some electric lights were added at that time to supplement the gas lights. Electric lighting, though a relatively new technology (it wasn’t until 1883 that the first church in the United States was wired for electricity), was much easier to use and much safer than gas. Electrical lighting was rapidly replacing gas lighting across the country. The chandeliers that were going to adorn First Presbyterian actually had dual fuel capability, thus combining the new technology of electrical lighting with the more proven technology of gas lighting. A fail-safe system seemingly. Each of the chandeliers had 72 lights, 36 electric and 36 gas, for a total potential of 216 lights. Dim lighting at First Presbyterian was going to be a feature of the past. -
THE MYSTERY of FLASH REVEALED by Charlie Borland All Text and Images Copyright © Charlie Borland
THE MYSTERY OF FLASH REVEALED by Charlie Borland All text and images Copyright © Charlie Borland LESSON 1 UNDERSTANDING FLASH In a perfect world for photography, every photograph we take would have perfect light, the perfect subject, perfect exposure, resulting in the perfect photograph. However, as you know there is nothing perfect in our world including the conditions, in which we photograph. Fortunately, there are tools available that allow us to capture pictures that may appear close to perfect and flash is one of them. Flash has so many useful applications in photography. It can be the dominant light source or a secondary light source. Here it is secondary as the flash is set for flash fill to lower the contrast created by the sun. We will cover flash fill coming up. In this course, we will closely examine how flash works in conjunction with your camera and explore techniques that will improve your photographs, and even open up creative options you may not have been aware. Once you understand the principals behind flash, you will find that using one is really quite simple. You can then take these fundamentals, and apply them to your particular flash and camera system. There are many makes and models available today and they change literally on a daily basis. We cannot possibly cover how each and every flash unit works, but with the basic understanding of flash theory and technique, you should easily be able to revisit your owner’s manual and gain a thorough understanding of how your flash and camera system work together. -
2455-2240, Volume 19 Issue 1,April 2020
International Journal of Research, Science, Technology & Management ISSN Online: 2455-2240, Volume 19 Issue 1,April 2020 A STUDY OF SOLAR STREET LIGHT AND OPTIMIZATION FOR SPACING IN POLES AND COST Abhigyan Singh, Dayanand Saraswati ABSTRACT In this paper we are studding the convectional led light of renewable energy of electrification. Now the India has been using the remote control of energy in solar power. Solar electrification is the most important part of the developing in India as it is urban area or rural area. In this paper, we are focusing the optimization of solar electrification to charge of power, cost efficient and efficiency effect. Also discuss the how LED light is more efficiently as compare to the CFL light in solar street light. We will discuss the study of LED light and CFL light about access the energy in solar project. Solar street light project has developed by new technology as automated control system, tubular battery, panel’s type. India is using the solar street light in rural areas because of the less transportation of electricity in rural areas. We are studding the rural street light in Rajasthan to generate the solar electric light in road. Solar Street light is friendly behavior of human being to save the energy and reduces the criminal cases on road in night and also reduced the accident in night. Street light optimization is discussing the sufficient of street light in an area of road in INDIA. We are discussing the population of rural area and use the street light to evaluate the effect on environment by the different type of light. -
Street Lighting Design Guidelines & Details
City and County of Denver Street Lighting Design Guidelines & Details Department of Public Works Engineering Division September 2019 City and County of Denver Street Lighting Design Guidelines Developed by: The City and County of Denver Public Works Department Clanton & Associates, Inc. Jacobs Engineering Group Copyright © 2019 City and County of Denver. All Rights Reserved. Reproduction of this document, in any form, without prior written permission from the City and County of Denver is strictly prohibited. Distribution of this document is strictly for use by and for business within the City and County of Denver, CO. 2 | Page City and County of Denver Street Lighting Design Guidelines Table of Content Background and Purpose .................................................................................................................................. 7 1.1 Typical Street Light Installations............................................................................................................. 7 Streetlight General Guidance ........................................................................................................................... 9 Fundamentals of Lighting Design ................................................................................................................. 11 3.1 Factors in Lighting Design ..................................................................................................................... 11 3.2 Non-Visual Effects of Light ................................................................................................................... -
Light and Dark.Pdf
LIGHT AND DARK DAVID GREENE Institute of Physics Publishing Bristol and Philadelphia c IOP Publishing Ltd 2003 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the publisher. Multiple copying is permitted in accordance with the terms of licences issued by the Copyright Licensing Agency under the terms of its agreement with Universities UK (UUK). British Library Cataloguing-in-Publication Data A catalogue record for this book is available from the British Library. ISBN 0 7503 0874 5 Library of Congress Cataloging-in-Publication Data are available Commissioning Editor: Nicki Dennis Production Editor: Simon Laurenson Production Control: Sarah Plenty Cover Design: Fr´ed´erique Swist Marketing: Nicola Newey and Verity Cooke Published by Institute of Physics Publishing, wholly owned by The Institute of Physics, London Institute of Physics Publishing, Dirac House, Temple Back, Bristol BS1 6BE, UK US Office: Institute of Physics Publishing, The Public Ledger Building, Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106, USA Typeset in LATEX2ε by Text 2 Text, Torquay, Devon Printed in the UK by J W Arrowsmith Ltd, Bristol CONTENTS PREFACE ix 1 ESSENTIAL, USEFUL AND FRIVOLOUS LIGHT 1 1.1 Light for life 1 1.2 Wonder and worship 4 1.3 Artificial illumination 6 1.3.1 Light from combustion 6 1.3.2 Arc lamps and filament lamps 9 1.3.3 Gas discharge lamps -
LIGHT's LABOUR's LOST Policies for Energy-Efficient Lighting
INTERNATIONAL ENERGY AGENCY LIGHT'S LABOUR'S LOST Policies for Energy-efficient Lighting In support of the G8 Plan of Action Warning: Please note that this PDF is subject to specific restrictions that limit its use and distribution. The terms and conditions are available online at http://www.iea.org/w/ bookshop/pricing.html ENERGY EFFICIENCY POLICY PROFILES 01 - 23 Pages début + 531-537 abbr.qxd 15/06/06 16:55 Page 1 LIGHT'S LABOUR'S LOST Policies for Energy-efficient Lighting In support of the G8 Plan of Action ENERGY EFFICIENCY POLICY PROFILES INTERNATIONAL ENERGY AGENCY The International Energy Agency (IEA) is an autonomous body which was established in November 1974 within the framework of the Organisation for Economic Co-operation and Development (OECD) to implement an international energy programme. It carries out a comprehensive programme of energy co-operation among twenty-six of the OECD’s thirty member countries. The basic aims of the IEA are: • to maintain and improve systems for coping with oil supply disruptions; • to promote rational energy policies in a global context through co-operative relations with non-member countries, industry and international organisations; • to operate a permanent information system on the international oil market; • to improve the world’s energy supply and demand structure by developing alternative energy sources and increasing the efficiency of energy use; • to assist in the integration of environmental and energy policies. The IEA member countries are: Australia, Austria, Belgium, Canada, the Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Japan, the Republic of Korea, Luxembourg, the Netherlands, New Zealand, Norway, Portugal, Spain, Sweden, Switzerland, Turkey, the United Kingdom, the United States. -
Solid-State Lighting Based on Light Emitting Diode Technology Dandan Zhu and Colin J
87 5 Solid-State Lighting Based on Light Emitting Diode Technology Dandan Zhu and Colin J. Humphreys 5.1 Historical Development of LEDs – 88 5.2 The Importance of Nitride Materials – 89 5.3 LED Basics – 90 5.4 Fabrication of an LED Luminaire – 92 5.4.1 Efficiency and Efficacy – 93 5.5 Research Challenges – 94 5.5.1 Crystal Growth – 95 5.5.2 Internal Electric Field – 97 5.5.3 p-Type Doping – 99 5.5.4 Green Gap and Efficiency Droop – 100 5.5.5 Chip Design – 102 5.5.6 Generation of White Light with LEDs – 103 5.5.7 LED Packaging – 105 5.6 LEDs for Lighting – 106 5.6.1 Quality of LED Lighting – 106 5.6.2 Efficacy – 107 5.6.3 Lifetime – 108 5.6.4 Cost – 109 5.7 LED Lighting Applications: The Present and Future – 110 5.7.1 General Illumination and Energy Saving – 112 5.7.2 Circadian Rhythm Lighting – 113 5.8 Chapter Summary – 114 References – 114 D. Zhu C.J. Humphreys (*) Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB30FS, UK e-mail: [email protected] © The Author(s) 2016 M.D. Al-Amri et al. (eds.), Optics in Our Time, DOI 10.1007/978-3-319-31903-2_5 88 D. Zhu and C.J. Humphreys 5.1 Historical Development of LEDs More than 100 years ago in 1907, an Englishman named Henry Joseph Round discovered that inorganic materials could light up when an electric current flowed through. -
Lighting 101
Strobist ::: Apparatus minor • Cogitatio magis • Lux melior ::: Lighting 101 http://strobist.com ver. 12-2013 Introduction Welcome to Lighting 101. You may not realize it yet, but you have just stepped through a door that may change your photography forever. Over the past few years, over four million people from nearly every country in the world have begun their lighting education right here. And if they can do it, you can do it. Photography is literally writing with light. As you read through Lighting 101 you'll learn how to control every aspect of your electronic flash. If you can imagine it, you'll be able to create it. You'll learn how to take the removable flash that you probably already have on the top of your camera and use it off-camera to make beautiful, more three-dimensional photos. Once you learn the basics of controlling light, you'll quickly see that most lighting is intuitive, easy and fun. The Good News: The Gear Doesn't Cost Much (Photo by Strobist reader Sam Simon) Basic lighting gear is also refreshingly inexpensive. If you have a camera, lens and flash you have already done the spendy part. The gear needed to take your light off-camera is very inexpensive compared to your camera, your flash or even a single lens. By getting your flash off-camera, your images become more three-dimensional, more textural and more professional looking. All of the photos on this page were made by Strobist readers (who very recently may well have been exactly where you are right now) just lighting with small flashes. -
Energy Efficient Landscape Lighting
energy efficient landscape lighting OPTIONS FOR COMMERCIAL & RESIDENTIAL SITES June 2008. Casey Gates energy efficient landscape lighting OPTIONS FOR COMMERCIAL & RESIDENTIAL SITES June 2008. A Senior Project Presented to the Faculty of the Landscape Architecture Department University of California, Davis in Partial Fulfillment of the Requirement for the Degree of Bachelors of Science of Landscape Architecture Accepted and Approved by: __________________________ Faculty Committee Member, Byron McCulley _____________________________ Committee Member, Bart van der Zeeuw _____________________________ Committee Member, Jocelyn Brodeur _____________________________ Faculty Senior Project Advisor, Rob Thayer Casey Gates Acknowledgements THANK YOU Committee Members: Byron McCulley, Jocelyn Brodeur, Bart Van der zeeuw, Rob Thayer Thank you for guiding me through this process. You were so helpful in making sense of my ideas and putting it all together. You are great mentors. Family: Mom, Dad, Kelley, Rusty You inspire me every day. One of my LDA projects 2007 One of my LDA projects 2007, Walker Hall The family Acknowledgements Abstract ENERGY EFFICIENT LANDSCAPE LIGHTING IN COMMERCIAL AND LARGE SCALE RESIDENTIAL SITES Summary Landscape lighting in commercial and large scale residential sites is an important component to the landscape architecture industry. It is a concept that is not commonly covered in university courses but has a significant impact on the success of a site. This project examines the concepts of landscape lighting and suggests ideas to improve design standards while maintaining energy efficiency. This project will discuss methods and ideas of landscape lighting to improve energy efficiency. Designers should know lighting techniques and their energy efficient alternatives. This project demonstrates how design does not have to be compromised for the sake of energy efficiency. -
Characterization, Modeling, and Optimization of Light-Emitting Diode Systems
Downloaded from orbit.dtu.dk on: Oct 09, 2021 Characterization, Modeling, and Optimization of Light-Emitting Diode Systems Thorseth, Anders Publication date: 2011 Document Version Publisher's PDF, also known as Version of record Link back to DTU Orbit Citation (APA): Thorseth, A. (2011). Characterization, Modeling, and Optimization of Light-Emitting Diode Systems. Technical University of Denmark. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Users may download and print one copy of any publication from the public portal for the purpose of private study or research. You may not further distribute the material or use it for any profit-making activity or commercial gain You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. FACULTY OF SCIENCE UNIVERSITY OF COPENHAGEN Ph.D. thesis Anders Thorseth Characterization, Modeling, and Optimiza- tion of Light-Emitting Diode Systems Principal supervisor: Jan W. Thomsen Co-supervisor: Carsten Dam-Hansen Submitted: 31/03/2011 i \Here forms, here colours, here the character of every part of the universe are concentrated to a point." Leonardo da Vinci, on the eye [156, p. 20] ii Abstract This thesis explores, characterization, modeling, and optimization of light-emitting diodes (LED) for general illumination.