History of Electric Light
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The Electric Arc Plasma Temperature
DIAGNOSTICS OF MULTICOMPONENT ELECTRIC ARC PLASMA A.I. Cheredarchuk, V.F. Boretskij, A.N. Veklich Taras Shevchenko Kiev National University, Kiev, Ukraine E-mail: [email protected] The plasma parameters of electric arc discharge in a gas flow between copper electrodes were investigated. The electrical conductivity of copper-argon and copper-carbon dioxide plasma was calculated. It was found that at low temperatures (5000 K<T<9000 K) the electrical conductivity considerably depends on the amount of copper in plasma. PACS: 51.20.d 1. INTRODUCTION Ne(r) in discharge at 30 A were obtained from width of The electric arc between evaporated electrodes has spectral lines CuI 448.0 nm, broadened due to the quadratic diverse technological applications. It is well known that Stark effect. In the case of low current (3.5 A) absolute electrode vapours have a determining influence on intensity of CuI 465.1 nm spectral line was used. properties of arc plasma. The insignificant impurity N , m-3 (about 1 %) of electrode metal vapour appreciably j CO 2 changes plasma parameters of the discharge in a rather CO wide temperature range [1]. Unfortunately the influence O O e of metal impurity on the plasma of free burning electric 1E23 2 C arc discharge in different working gases is not O+ experimentally investigated in detail yet. The main aim of this study is a development of complex diagnostics techniques of determination of 1E20 plasma parameters of electric arc discharge in a gas flow between copper electrodes. + CO 2. TRANSPORT PROPERTIES C 2 T, K 1E17 OF THERMAL PLASMA 5000 10000 15000 20000 In calculations of the transport properties of thermal plasma it is necessary to know the proportion between Fig. -
Based on Bicycle Dynamic Energy
© 2021 JETIR July 2021, Volume 8, Issue 7 www.jetir.org (ISSN-2349-5162) Developing A Vehicle - Based On Bicycle Dynamic Energy 1V Dhanush Kumar, 1Pavan Yadhav, 1Naveen Reddy A, 1P M Nitesh Kumar, 2Anand Babu K 1U G Scholar, 2Assistant Professor 1,2School of Mechanical Engineering, REVA University, Bengaluru-560064, Karnataka, India. Abstract:- There are so many vehicles that came to influence in the existing world. Their operating systems are based on usual fossil fuels system. At the present sense the fossil fuel can exceed only for a certain period after that we have to go for a change to other methods. Thus we have made an attempt to design and fabricate an ultimate system (solar cycle) which would produce cheaper and effective result than the existing system. This will be very useful needs of the world. An attempt is made in the fabrication of solar powered system for a two-wheeler. The drive system of the normal cycle is not altered. This system is two in one system. The cycle is operated either by pedaling manually battery and motor driving mechanism. Index Term: Dynamo, Throttle, Pedaling, Battery, Sprocket I. Introduction:- All vehicles that are in the market cause pollution and the fuel cost is also increasing day by day. In order to compensate the fluctuating fuel cost and reducing the pollution a good remedy is needed i.e. our transporting system. Due to ignition of hydrocarbon fuels, in the vehicle, sometime difficulties such as wear and tear may be high and more attention is needed for proper maintenance. -
July 5, 1938. A. CALLSEN 2,123,133 APPARATUS for SWITCHING on the STARTER of an INTERNAL COMBUSTION ENGINE Filed Jan
July 5, 1938. A. CALLSEN 2,123,133 APPARATUS FOR SWITCHING ON THE STARTER OF AN INTERNAL COMBUSTION ENGINE Filed Jan. 25, 1937 2. Sheets-Sheet l July 5, 1938. A. CALS EN 2,123,133 APPARATUS FOR SWITCHING ON THE STARTER OF AN INTERNAL COMBUSTION ENGINE Filed Jan. 25, 1937 2. Sheets-Sheet 2 Patented July 5, 1938 2,123,133 UNITED STATES PATENT OFFICE 2,123,133 APPARATUS FOR SWITCHING ON THE STARTER OF AN INTERNAL COMBUSTION ENGINE Albert Casen, stuttgart-Botnang, Germany, as signor to Robert Bosch Gesellschaft mit be schrankter Haftung, a corporation of Ger many Application January 25, 1937, Serial No. 122,261 In Germany February 1, 1936 15 Claims. (Ch. 290-36) The invention relates to an apparatus for ing the starting exactly as When accelerating. switching on the starter of an internal combus The foot can thus be moved back even into its tion engine for use on vehicles, in which other initial position, and if desired, removed wholly elements of the vehicle control besides the starter from the pedal. 5 are operated by a common operating member. The invention is more particularly described In known apparatus of this kind, the clutch With reference to the accompanying drawings, in pedal or accelerator pedal is connected with the Which:- SWitch of the starter by a clutch which is engaged Figure 1 is a diagrammatic view of One arrange when the engine is stopped, while it is released ment of switch control apparatus. 0 by the vacuum of the engine induction pipe or Figures 2, 3, and 4 are similar views of alter 10 by a relay fed from the lighting dynamo when native constructions. -
Industrial Lighting a Primer
Industrial Lighting A Primer All through history people have sought better ways to illuminate their work. Even the cavemen needed torches to allow them to draw on the walls of their underground caverns. Fire brought both light and heat for thousands of years before crude lamps of animal fat gave way to the candle for general indoor illumination used around the world. Roman Grease Lamp An offshoot of the common candlestick became what we now call the Lacemakers Globe. This quite possibly could qualify as the world’s first industrial light source! It was observed that when a candle flame was aligned behind a rounded glass bottle filled with water, a magnifying and focusing effect was produced, in addition to simply lighting up a small area. This was high technology of the first order! No longer did the lacemaker have to pack it in when the sun went down, for soon the new Lacemaker’s Globe became fairly common in European Cottage Industry, enabling the production of lace at a greater rate than ever before. It is also not too much of a stretch to conclude that the repetitive patterns of the lacemaker could be looked upon as a forerunner to the theory of mass production, along with the pin makers who toiled away in the ‘second tier’ of the feeble light pool cast by the globe, hammering heads onto straightened bits of wire in order to make the common pin. This was mighty slim pickings by today’s standards to be sure, but just a few hundred years ago it represented a revolutionary increase in handiwork production after the sun went down, for the very first time in history. -
Valentine from a Telegraph Clerk to a Telegraph Clerk
Science Museum Group Journal Technologies of Romance: Valentine from a Telegraph Clerk ♂ to a Telegraph Clerk ♀: the material culture and standards of early electrical telegraphy Journal ISSN number: 2054-5770 This article was written by Elizabeth Bruton 10-08-2019 Cite as 10.15180; 191201 Discussion Technologies of Romance: Valentine from a Telegraph Clerk ♂ to a Telegraph Clerk ♀: the material culture and standards of early electrical telegraphy Published in Autumn 2019, Issue 12 Article DOI: http://dx.doi.org/10.15180/191201 Keywords electrical telegraphy, poetry, scientific instruments, James Clerk Maxwell Valentine from A Telegraph Clerk ♂ to a Telegraph Clerk ♀, by JC Maxwell, 1860 The tendrils of my soul are twined With thine, though many a mile apart. And thine in close coiled circuits wind Around the needle of my heart. Constant as Daniell, strong as Grove. Ebullient throughout its depths like Smee, My heart puts forth its tide of love, And all its circuits close in thee. O tell me, when along the line From my full heart the message flows, What currents are induced in thine? One click from thee will end my woes. Through many an Ohm the Weber flew, And clicked this answer back to me; I am thy Farad staunch and true, Charged to a Volt with love for thee Component DOI: http://dx.doi.org/10.15180/191201/001 Introduction In 1860, renowned natural philosopher (now referred to as a ‘scientist’ or, more specifically in the case of Clerk Maxwell, a ‘physicist’) James Clerk Maxwell wrote ‘Valentine from a Telegraph Clerk ♂ [male] to a Telegraph Clerk ♀ [female]’ (Harman, 2001).[1] The short poem was a slightly tongue-in-cheek ode to the romance of the electric telegraph littered with references to manufacturers of batteries used in electrical telegraphy around this time such as John Daniell, Alfred Smee, and William Grove and electrical units (now SI derived units) such as Ohm, Weber, Farad and Volt (Mills, 1995). -
Evaluation of Electric Lighting Products
U.S. CONSUMER PRODUCT SAFETY COMMISSION DIRECTORATE FOR ENGINEERING SCIENCES EVALUATION OF ELECTRIC LIGHTING PRODUCTS December 2007 Anna Luo Electrical Engineer Division of Electrical Engineering Directorate for Engineering Sciences This report has not been reviewed or approved by, and may not necessarily reflect the views of, the Commission. Table of Contents I. INTRODUCTION...................................................................................................................... 1 II. PROJECT OUTLINE................................................................................................................ 1 III. VOLUNTARY STANDARDS................................................................................................ 1 IV. TERMINOLOGY.................................................................................................................... 2 V. PRODUCT CHARACTERISTICS........................................................................................... 3 VI. TASK 1 – Review of Incident Data......................................................................................... 4 A. Portable Lighting Incidents ............................................................................................ 4 B. Installed Lighting Incidents............................................................................................ 5 C. Incidents Associated with Other Factors........................................................................ 6 VII. TASK 2 - Inspection of Collected Samples .......................................................................... -
Selective Radiation from Various Substances, Iii
. SELECTIVE RADIATION FROM VARIOUS SUBSTANCES, III By W. W. Coblentz CONTENTS Page. I. Introduction 243 II. Apparatus and Methods 244 1 The Spectrometer 244 2. Comparison of Dispersion of Prisms 246 3. The Radiometers 247 4. The Rotating Sectored Disk 249 5. Accuracy Attainable 252 III. The Acetylene Flame.' 253 1 Historical 253 2. The Visible Spectrum 257 3. The Emissivity a Function of the Thickness of the Radiating Layer. 261 4. Comparison of Acetylene Flame and a Solid Radiator 264 5. Absorptivity of an Acetylene Flame 266 6. Summary 273 IV. The Selective Emission oif the Welsbach Mantle 274 1 Historical 274 2. The Visible Spectrum 277 3. Comparison of a Gas Mantle with a Solid Glower 278 V. Miscellaneous Substances 287 1 Emission of Arc of Nemst Glower Materials 287 2. Color Match Versus Spectral Intensity Match 288 I. INTRODUCTION The present investigation is the beginning of an attempt to supply a long-felt need of an accurate knov/ledge of the spectral energy distribution, of some standard sources of Hght, in the visible and in the ultra-violet parts of the spectrum. The problem is a difficult one and heretofore has never been given thorough attention. Once the spectral energy distribution of a standard source of illumination is accurately known, it is possible to obtain the spectral energy distribution of other weaker sources of radia- tion by indirect methods, such as by spectrophotography or spectrophotometry. The standard sources which are the most easily reproduced are probably well seasoned incandescent lamps 243 244 Bulletin of the Bureau of Standards [Voi. -
!History of Lightingv2.Qxd
CONTENTS Introduction 3 The role of lighting in modern society 3 1. The oldest light sources 4 Before the advent of the lamp 4 The oldest lamps 4 Candles and torches 5 Further development of the oil lamp 6 2. Gaslight 9 Introduction 9 Early history 9 Gas production 10 Gaslight burners 10 The gas mantle 11 3. Electric lighting before the incandescent lamp 14 Introduction 14 Principle of the arc lamp 15 Further development of the arc lamp 16 Applications of the arc lamp 17 4. The incandescent lamp 20 The forerunners 20 The birth of the carbon-filament lamp 22 Further development of the carbon-filament lamp 25 Early metal-filament lamps 27 The Nernst lamp 28 The birth of the tungsten-filament lamp 29 Drawn tungsten filaments 30 Coiled filaments 30 The halogen incandescent lamp 31 5. Discharge lamps 32 Introduction 32 The beginning 32 High-voltage lamps 33 Early low-pressure mercury lamps 34 The fluorescent lamp 35 High-pressure mercury lamps 36 Sodium lamps 37 The xenon lamp 38 6. Electricity production and distribution 39 Introduction 39 Influence machines and batteries 39 Magneto-electric generators 40 Self-exciting generators 41 The oldest public electricity supply systems 41 The battle of systems 42 The advent of modern a.c. networks 43 The History of Light and Lighting While the lighting industry is generally recognized as being born in 1879 with the introduction of Thomas Alva Edison’s incandescent light bulb, the real story of light begins thousands of years earlier. This brochure was developed to provide an extensive look at one of the most important inventions in mankind’s history: artificial lighting. -
Operator's Manual
OPERATOR'S MANUAL MODELS GR2020G GR2120 GR2120AU G R 2 0 2 0 G · G R 2 1 2 0 · G R 2 1 2 0 1BDAHAOAP0580 A AS . D . 1 - 1 . - . AK Code No. K1270-7122-1 U READ AND SAVE THIS MANUAL PRINTED IN U.S.A. © KUBOTA Corporation 2014 ABBREVIATION LIST Abbreviations Definitions API American Petroleum Institute PTO Power Take Off PT Permanent Type (=Ethylene glycol anti-freeze) rpm Revolutions Per Minute SAE Society of Automotive Engineers KRA Kubota Reverse Awareness System KUBOTA Corporation is ··· Since its inception in 1890, KUBOTA Corporation has grown to rank as one of the major firms in Japan. UNIVERSAL SYMBOLS To achieve this status, the company has through the years diversified the range of its products and services to a remarkable As a guide to the operation of your tractor, various universal symbols have been utilized on the instruments and extent. Nineteen plants and 16,000 employees produce over 1,000 controls. The symbols are shown below with an indication of their meaning. different items, large and small. All these products and all the services which accompany them, Safety Alert Symbol Coolant Temperature however, are unified by one central commitment. KUBOTA makes products which, taken on a national scale, are basic necessities. Gasoline Fuel Mower-Lowered position Products which are indispensable. Products which are intended to help individuals and nations fulfill the potential inherent in their Diesel Fuel Mower-Raised position environment. KUBOTA is the Basic Necessities Giant. Brake Headlight This potential includes water supply, food from the soil and from the sea, industrial development, architecture and construction, Parking Brake Headlight-ON transportation. -
Electric Light Pdf, Epub, Ebook
ELECTRIC LIGHT PDF, EPUB, EBOOK Seamus Heaney | 96 pages | 19 Mar 2001 | FABER & FABER | 9780571207985 | English | London, United Kingdom Electric Light PDF Book Tour EL: 5 min videos on each light type, followed by a 5 question quiz for each lamp type. Wednesday 17 June In , Thomas Edison began serious research into developing a practical incandescent lamp and on October 14, , Edison filed his first patent application for "Improvement In Electric Lights". Sunday 27 September Wednesday 29 July Wednesday 16 September View all albums. Saturday 10 October View all similar artists. In colder climates where heating and lighting is required during the cold and dark winter months, the heat byproduct has some value. Saturday 15 August Similar To Jeff Lynne. Tuesday 18 August Monday 25 May Wednesday 22 April Play album Buy Loading. Friday 24 April Wednesday 15 July Main article: Incandescent light bulb. Wednesday 14 October Help Learn to edit Community portal Recent changes Upload file. Features Exploring the local sounds and scenes at Noise Pop Fest. Due to the importance of this area of engineering we offer a full course of web pages, videos, and educational tools to communicate to you the world of of the electric light and the engineers and inventors who made it possible. Friday 31 July Monday 8 June Friday 21 August Sunday 18 October Friday 26 June The inside of the tubes are coated with phosphors that give off visible light when struck by ultraviolet photons. Friday 4 September Connect to Spotify Dismiss. Thursday 7 May Sunday 31 May Wednesday 1 July Tuesday 20 October The electric arc is struck by touching the rod tips then separating them. -
Light Bulbs + Sockets Light Bulbs + Sockets Prices See Main Assortment Shop.Griederbauteile.Ch Prices See Treasure Trove Shop.Griederbauteile.Ch
Light Bulbs + Sockets Light Bulbs + Sockets Prices see Main Assortment shop.griederbauteile.ch Prices see Treasure Trove shop.griederbauteile.ch E10 Page 2 – 3 Multi LED Page 3 E5/8 + E5.5/16 Page 4 E14 E27 + E40 (Projection Lamps) Page 5 T2 Ba7s Ba9s Page 6 + 7 Ba15s + Ba15d Page 7 Ba20s + Ba20d Page 8 T¾ Page 8 + 9 T1 T¼ + T1½ + T1¾ Page 9 – 13 Special Bulbs + Wedge Base Page 14 LED Lamps + Projection Lamps Page 15 Halogen + Fluorescent Page 16 Festoon Page 17 Telecommunication Bulbs Page 17 – 20 Glow Lamps Page 20 Indicator Lights Page 21 Sockets Page 21 – 23 Subject to alterations and errors. www.griederbauteile.ch Pictures are a guide only. 1 Edition April 2017 Light Bulbs + Sockets Light Bulbs E10 Spherical Shape Order No Voltage Current Pow er Bailey Number EBA.0110 1.5V 100mA 150mW E24001090 EBA.0210 2.5V 100mA 250mW E24001100 EBA.0230 2.5V 300mA 750mW E24002300 EBA.0407 3.8V 80mA 266mW E24003070 EBA.0430 3.8V 300mA 1140mW E24003301 EBA.0605 6V 50mA 300mW E24006050 EBA.0610 6V 100mA 600mW E24006100 EBA.0630 6V 300mA 1800mW E24006300 EBA.1205 12V 50mA 600mW E24012050 EBA.1210 12V 100mA 1200mW E24012100 EBA.1225 12V 250mA 3W E24012250 EBA.2402 24V 20mA 480mW EBA.2405 24V 50mA 1200mW E24024050 EBA.2412 24V 125mA 3W E24024125 EBA.3602 36V 20mA 720mW EBA.3605 36V 50mA 1800mW E24036050 EBA.3608 36V 83mA 3W EBA.4802 48V 20mA 960mW EBA.4804 48V 40mA 1920mW EBA.4806 48V 63mA 3W EBA.6002 60V 20mA 1200mW EBA.6004 60V 40mA 2400mW Light Bulbs E10 Cylindrical Shape Order No Voltage Current Pow er Bailey Number EBB.0230 2.5V 300mA 850mW E28002300 -
The Electric-Lamp Industry
Massachusetts Institute of Technology Studies of Innovation • GiSma,..=("EaEssormat THE MACMILLAN COMPANY THE ELECTRIC-LAMP INDUSTRY: NEW YORK a BOSTON a CHICAGO DALLAS • ATLANTA • SAN FRANCISCO MACMILLAN AND CO., LIMITED Technological Change and Economic LONDON a BOMBAY a CALCUTTA MADRAS a MELBOURNE Development from 1800 to 1947 THE MACMILLAN COMPANY OF CANADA, LIMITED TORONTO By ARTHUR A. BRIGHT, Jr. THE MACMILLAN COMPANY • NEW YORK 1949 FOREWORD THIS study of the economic development of the electric- lamp industry is the second volume in a series of studies on the economics of innovation, undertaken at the Massachusetts Insti- tute of Technology. The creative role played by science and technology in modern economic life is apparent to everyone. But we know relatively little about the human factors which condition the introduction of technological change into our environment. Are there barriers to innovation inherent in the increasing concentration of power in a few large concerns? Does the patent system, designed as an incentive to invention, act more often as a brake on new develop- ments? What has been the role of key personalities in creating change? Are there lessons to be drawn from the past on how the innovating process can be more effective, not only from the standpoint of achieving a higher standard of material being but from the point of view of smoother human relations? Certainly, material progress at any price is not a satisfactory goal. On the other hand, freedom for creative action in initiating and carrying out new developments is a basic human drive for many individu- als. I believe, personally, that a great society should strive toward a goal which will give to individuals and groups the maximum opportunities for creative expression; yet this means to me that the State must act to prevent the compulsive pressure of some particular group from overriding others to the destruction of human values.