(Location of Legal Description
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Ae Outerbridge, Jr
18 4 ANNUAL REPORT OF BOARD OF MANAGERS. Model of canal boat with screw-propellers; also models of ice-boats and boats with feathering paddle-wheel blades. Models of earliest forms of lattice girder bridges. Sectional model of early beam engine with Watt parallel motion and condenser. Model of locomotive engine, by George Stevenson, I816. Sectional model of side-lever engine. Working models of early forms of stationary engines and locomotives. Models by Eastwick, Harrison, Baldwin, and other inventors, of crank motions and various other portions of engines, such as cylinders, etc. Model of Herman's mechanism for converting rectilinear into rotary motion. Beam engine, by Henry Cartwright, model 1842. Model of first World's Fair premium harrow. Model of Bain's printing telegraph, 1844. Various models and working apparatus of Morse and other inventors in the early history of telegraphy. Model of Oliver Evans's " Oructor Amphibolis." Original Yale lock, 1855. Benjamin Franklin's original electrical machine and various other apparatus used by him. In conclusion, it may be stated that all of the working models have been taken apart, cleaned, repaired by skilled mechanics, and all have been operated. Some of these models are displayed in the Library and lecture-room; many others line the walls of the class-rooms, where they are at all times available for educational purposes. Respectfully submitted, A. E. OUTERBRIDGE, JR., PHILADELPHIA, January 8, 1913. Chairman. REPORT OF THE COMMITTEE ON MEETINGS. To the President and Members of The Franklin Institute: During the year ending September 30, 1912, nine stated meetings of the Institute were held under arrangements made by the Committee on Meetings, with the co-operation of the Secretary's office. -
Electrical Engineering
SCIENCE MUSEUM SOUTH KENSINGTON HANDBOOK OF THE COLLECTIONS ILLUSTRATING ELECTRICAL ENGINEERING II. RADIO COMMUNICATION By W. T. O'DEA, B.Sc., A.M.I.E.E. Part I.-History and Development Crown Copyright Reseruea LONDON PUBLISHED BY HIS MAJESTY's STATIONERY OFFICI To be purchued directly from H.M. STATIONERY OFFICI at the following addre:11ea Adutral Houae, Kinpway, London, W.C.z; no, George Street, Edinburgh:& York Street, Manchester 1 ; 1, St, Andrew'• Cretccnr, Cudi.lf So, Chichester Street, Belfa1t or through any Booueller 1934 Price 2s. 6d. net CONTENTS PAGB PREFACE 5 ELECTROMAGNETI<: WAVF13 7 DETECTORS - I I EARLY WIRELESS TELEGRAPHY EXPERIMENTS 17 THE DEVELOPMENT OF WIRELESS TELEGRAPHY - 23 THE THERMIONIC vALVE 38 FuRTHER DEVELOPMENTS IN TRANSMISSION 5 I WIRELESS TELEPHONY REcEIVERS 66 TELEVISION (and Picture Telegraphy) 77 MISCELLANEOUS DEVELOPMENTS (Microphones, Loudspeakers, Measure- ment of Wavelength) 83 REFERENCES - 92 INDEX - 93 LIST OF ILLUSTRATIONS FACING PAGE Fig. I. Brookman's Park twin broadcast transmitters -Frontispiece Fig. 2. Hughes' clockwork transmitter and detector, 1878 8 Fig. 3· Original Hertz Apparatus - Fig. 4· Original Hertz Apparatus - Fig. S· Original Hertz Apparatus - 9 Fig. 6. Oscillators and resonators, 1894- 12 Fig. 7· Lodge coherers, 1889-94 - Fig. 8. Magnetic detectors, 1897, 1902 - Fig. 9· Pedersen tikker, 1901 I3 Fig. IO. Original Fleming diode valves, 1904 - Fig. II. Audion, Lieben-Reisz relay, Pliotron - Fig. IZ. Marconi transmitter and receiver, 1896 Fig. IJ. Lodge-Muirhead and Marconi receivers 17 Fig. 14. Marconi's first tuned transmitter, 1899 Fig. IS. 11 Tune A" coil set, 1900 - 20 Fig. 16. Marconi at Signal Hill, Newfoundland, 1901 Fig. -
Wireless Telegraphy and Radio Wireless Information Network and National Broadcast System
Wireless Telegraphy and Radio Wireless Information Network and National Broadcast System CEE 102: Prof. Michael G. Littman Course Administrator: Hiba Abdel-Jaber [email protected] Computers allowed for NOTETAKING ONLY Please - NO Cell Phones, Texting, Internet use 1 Consumer Goods 1900 - 1980 Economics and Politics 2 Consumer Goods 1900 - 1980 RMS Titanic with Marconi Antenna Economics and Politics 3 Marconi - Wireless messages at sea RMS Titanic with Marconi Antenna 4 transmitter receiver Marconi - Wireless messages at sea Heinrich Hertz’s Experiment - 1888 § Spark in transmitter initiates radio burst § Spark in receiver ring detects radio burst 5 transmitter receiver DEMO Marconi - Wireless messages at sea Heinrich Hertz’s Experiment - 1888 § Spark in transmitter initiates radio burst § Spark in receiver ring detects radio burst 6 transmitter receiver Heinrich Hertz’s Experiment - 1888 § Spark in transmitter initiates radio burst § Spark in receiver ring detects radio burst 7 Electromagnetic Wave wave-speed frequency wavelength Time or Length 8 Electromagnetic Wave wave-speed frequency Wireless Telegraph Hertz Discovery wavelength Marconi Patents Marconi Demonstrations Time or Length 9 Marconi’s Wireless Telegraph Wireless Telegraph Hertz Discovery Marconi Patents Marconi Demonstrations 10 Marconi’s Wireless Telegraph Wireless Telegraph Hertz Discovery DEMO Marconi Patents Marconi Demonstrations 11 Marconi’s Wireless Telegraph 12 13 Marconi’s Patent for Tuning coherer 14 Tuning Circuit Marconi’s Patent for Tuning L C coherer 1 1 ν = 2π LC 15 Transmitting antenna Marconi’s Patent for Tuning coherer Cornwall (England) 16 KITE Receiving antenna Transmitting antenna Saint John’s (Newfoundland) Cornwall (England) …..dot……….……dot……......…….dot…... December 12, 1901 17 KITE Receiving antenna Saint John’s (Newfoundland) Marconi gets Nobel Prize in 1909 …..dot……….……dot……......…….dot….. -
The Last Days of Night
FEATURE CLE: THE LAST DAYS OF NIGHT CLE Credit: 1.0 Thursday, June 14, 2018 1:25 p.m. - 2:25 p.m. Heritage East and Center Lexington Convention Center Lexington, Kentucky A NOTE CONCERNING THE PROGRAM MATERIALS The materials included in this Kentucky Bar Association Continuing Legal Education handbook are intended to provide current and accurate information about the subject matter covered. No representation or warranty is made concerning the application of the legal or other principles discussed by the instructors to any specific fact situation, nor is any prediction made concerning how any particular judge or jury will interpret or apply such principles. The proper interpretation or application of the principles discussed is a matter for the considered judgment of the individual legal practitioner. The faculty and staff of this Kentucky Bar Association CLE program disclaim liability therefore. Attorneys using these materials, or information otherwise conveyed during the program, in dealing with a specific legal matter have a duty to research original and current sources of authority. Printed by: Evolution Creative Solutions 7107 Shona Drive Cincinnati, Ohio 45237 Kentucky Bar Association TABLE OF CONTENTS The Presenter .................................................................................................................. i The War of the Currents: Examining the History Behind The Last Days of Night .................................................................................................... 1 AC/DC: The Two Currents -
Reginald Fessenden Challenge 2021
T H E R E G I N A L D F E S S E N D E N C H A L L E N G E 13 & 14 J U L Y2021 IN SUPPORT OF INASSOCIATIONWITH IN ASSOCIATION WITH THE REGINALD FESSENDEN CHALLENGE The rega�a is a fantas�c opportunity to network with industry peers, promote your brandamongst a relevant audience, enjoy a team building ac�vity and have a fun day, sailing in the UK's premier sailing area, the Solent. Whether you choose to bring a team from head office, or cap�vate key clients or business partners, a day on a yacht is an unrivalled way to build stronger working rela�onships.Combine that with networking drinks and dinner at the nearby Royal Southern Yacht Club - and the result is an exci�ng and produc�ve event! You and your invited team will sail together on a premium sailing yacht, under the guidance of a professional skipper - so don't worry, no previous sailing experience is required. OUR YACHTS Our Beneteau Oceanis 37’s are ideal for novice sailors and competent racers alike. As well as a superb sailing experience, these yachts are ideal for corporate hospitality, with an unclu�ered deck layout, spacious cockpit and plenty of room for crew to move about both above and below deck. Our professional skippers will give you a full safety brief and take you through the basics before you go out to sea, and con�nue training so no sailing experience is necessary. BENETEAU OCEANIS BENETEAU OCEANIS 37 37 INSIDE LAYOUT OUTSIDE LAYOUT THE CHARITY - The Not Forgotten The Not Forgo�en is a unique na�onal Tri-Service charity which provides entertainment, leisure and recrea�on for the serving wounded, injured or sick and for ex-service men and women with disabili�es. -
The Curious Case of U.S. Letters Patent No. 223,898
CHAPTER 5 The Curious Case of U.S. Letters Patent No. 223,898 I have not failed. I’ve just found ten thousand ways that don’t work. —Thomas Edison ho invented the light bulb? This was the topic at hand. Technically, the litigation Wwas between the Edison Electric Light Company and the Mount Morris Electric Light Company, but everyone knew that these were subsidiaries and legal proxies for their parent companies. Even the attorneys litigating this $1 billion case called it simply Edison v. Westinghouse. The issue before them: U.S. Letters Patent No. 223,898, granted to Thomas Edison on January 27, 1880, which described the invention of an “incandescent electric lamp.” Quickly nicknamed the Light Bulb Patent by the press, it was without question the most valuable patent ever granted in the history of the United States. And George Westinghouse was accused of infringing on it. Yet, as Paul Cravath pointed out to his client George Westinghouse, even a problem so simply put might yet admit to many layers of unraveling. In fact, the question hinged on one’s precise definition of the terms involved—“who,” “in- vented,” “the,” and, most importantly, “light bulb.” The first electric lamps had actually been invented almost a cen- tury before, Paul had learned when he’d first begun to research the case. Sir Humphry Davy had publicly demonstrated early “arc lights” in 1809. By attaching a battery to two charcoal sticks, he’d caused a U-shaped thread of electricity to “arc” across the gap between the sticks. The explosion of light was blindingly bright; perfect for light- ing dark outdoor areas, if it could be tamed into safety and reliability. -
Reginald Aubrey Fessenden (1866 – 1932)
Reginald Aubrey Fessenden (1866 – 1932) By Brian Smith As I approach middle age, I marvel at how little Canadian history was taught to us during our school years. Apparently, we missed a fair amount. Recent events, such as the controversy over changing the name of Mount Logan (for William Edmond Logan – surveyor / geologist) to Mount Trudeau and the CBC series, “Canada, A People’s History”, have begun to open the eyes of Canadians to our important and honoured past. Canadians have contributed a great deal to the events of the world. And that includes the ‘Father of Radio Broadcasting’, Canadian Reginald Fessenden. Reginald Fessenden was born in East Bolton, Quebec on October 6, 1866. He was the eldest son of Anglican Reverend Elisha and Clementina Fessenden (who are buried in Ancaster, Ontario, where a school still bears the family name). He spent his early boyhood in Fergus and Niagara Falls, Ontario. Reginald Fessenden developed a keen interest in mathematics far beyond his years, which led him, at the age of 14, to a mathematics mastership at Bishop’s College in Lennoxville, Quebec. At 18, he accepted a teaching position that took him to Bermuda where he met and married his wife, Helen, with whom he would spend the next 40 years and have only one child, a son. Fessenden had a keen interest in the work of Thomas Alva Edison. So much so that he left Bermuda at the age of 20 to seek employment at Thomas Edison’s machine shop in New York. He was hired as an instrument tester, without even meeting Edison, but so impressed Edison’s staff, that he was promoted to work in the labs and eventually became chief chemist; all before the age of 24. -
A Short History of Radio
Winter 2003-2004 AA ShortShort HistoryHistory ofof RadioRadio With an Inside Focus on Mobile Radio PIONEERS OF RADIO If success has many fathers, then radio • Edwin Armstrong—this WWI Army officer, Columbia is one of the world’s greatest University engineering professor, and creator of FM radio successes. Perhaps one simple way to sort out this invented the regenerative circuit, the first amplifying re- multiple parentage is to place those who have been ceiver and reliable continuous-wave transmitter; and the given credit for “fathering” superheterodyne circuit, a means of receiving, converting radio into groups. and amplifying weak, high-frequency electromagnetic waves. His inventions are considered by many to provide the foundation for cellular The Scientists: phones. • Henirich Hertz—this Clockwise from German physicist, who died of blood poisoning at bottom-Ernst age 37, was the first to Alexanderson prove that you could (1878-1975), transmit and receive Reginald Fessin- electric waves wirelessly. den (1866-1932), Although Hertz originally Heinrich Hertz thought his work had no (1857-1894), practical use, today it is Edwin Armstrong recognized as the fundamental (1890-1954), Lee building block of radio and every DeForest (1873- frequency measurement is named 1961), and Nikola after him (the Hertz). Tesla (1856-1943). • Nikola Tesla—was a Serbian- Center color American inventor who discovered photo is Gug- the basis for most alternating-current lielmo Marconi machinery. In 1884, a year after (1874-1937). coming to the United States he sold The Businessmen: the patent rights for his system of alternating- current dynamos, transformers, and motors to George • Guglielmo Marconi—this Italian crea- Westinghouse. -