Alexander Graham Bell Family Papers
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Wireless Networks
SUBJECT WIRELESS NETWORKS SESSION 2 WIRELESS Cellular Concepts and Designs" SESSION 2 Wireless A handheld marine radio. Part of a series on Antennas Common types[show] Components[show] Systems[hide] Antenna farm Amateur radio Cellular network Hotspot Municipal wireless network Radio Radio masts and towers Wi-Fi 1 Wireless Safety and regulation[show] Radiation sources / regions[show] Characteristics[show] Techniques[show] V T E Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor. The most common wireless technologies use radio. With radio waves distances can be short, such as a few meters for television or as far as thousands or even millions of kilometers for deep-space radio communications. It encompasses various types of fixed, mobile, and portable applications, including two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking. Other examples of applications of radio wireless technology include GPS units, garage door openers, wireless computer mice,keyboards and headsets, headphones, radio receivers, satellite television, broadcast television and cordless telephones. Somewhat less common methods of achieving wireless communications include the use of other electromagnetic wireless technologies, such as light, magnetic, or electric fields or the use of sound. Contents [hide] 1 Introduction 2 History o 2.1 Photophone o 2.2 Early wireless work o 2.3 Radio 3 Modes o 3.1 Radio o 3.2 Free-space optical o 3.3 -
Letter from Alexander Graham Bell to Alexander Melville Bell, February 26, 1880, with Transcript
Library of Congress Letter from Alexander Graham Bell to Alexander Melville Bell, February 26, 1880, with transcript ALEXANDER GRAHAM BELL TO HIS FATHER A. MELVILLE BELL 904 14th Street, N. W., Washington, D. C. Feb. 26th, 1880. Dear Papa: I have just written to Mamma about Mabel's baby and I now write to you about my own! Only think! — Two babies in one week! The first born at 904 14th Street — on the fifteenth inst., the other at my laboratory on the nineteenth. Both strong vigorous healthy young things and both destined I trust to grow into something great in the future. Mabel's baby was light enough at birth but mine was LIGHT ITSELF! Mabel's baby screamed inarticulately but mine spoke with distinct enunciation from the first. I have heard articulate speech produced by sunlight! I have heard a ray of the sun laugh and cough and sing! The dream of the past year has become a reality — the “ Photophone ” is an accomplished fact. I am not prepared at present to go into particulars and can only say that with Mr. Tainter's assistance I have succeeded in preparing crystalline selenium of so low a resistance and so sensitive to light that we have been enabled to perceive variations of light as sounds in the telephone. In this way I have been able to hear a shadow, and I have even perceived by ear the passage of a cloud across the sun's disk. Can Imagination picture what the future of this invention is to be! I dream of so many important and wonderful applications that I cannot bring myself to make known my discovery — until I have demonstrated the practicability of some of these schemes. -
Alexander Graham Bell
WEEK 2 LEVEL 7 Alexander Graham Bell Alexander Graham Bell is the famous inventor of the telephone. Born in Scotland on March 3, 1847, he was the second son of Alexander and Eliza Bell. His father taught students the art of speaking clearly, or elocution, and his mother played the piano. Bell’s mother was almost deaf. His father’s career and his mother’s hearing impairment influenced the course of his career. He became a teacher of deaf people. As a child, Bell didn’t care for school, and he eventually dropped out. He did like to solve problems though. For example, when he was only 12, he invented a new farm implement. The tool removed the tiny husks from wheat grains. After the deaths of his two brothers from tuberculosis, Bell and his parents moved from Europe to Canada in 1870. They thought the climate there was healthier than in Scotland. A year later, Bell moved to the United States. He got a job teaching at the Boston School for Deaf Mutes. © 2019 Scholar Within, Inc. WEEK 2 LEVEL 7 One of his students was a 15-year-old named Mabel Hubbard. He was 10 years older than she was, but they fell in love and married in 1877. The Bells raised two daughters but lost two sons who both died as babies. Bell’s father-in-law, Gardiner Hubbard, knew Bell was interested in inventing things, so he asked him to improve the telegraph. Telegraph messages were tapped out with a machine using dots and dashes known as Morse code. -
ARSC Journal, Vol
EDISON AND GROWING HOSTILITIES1 By Raymond Wile The spring of 1878 witnessed a flurry of phonographic activity at the Edison laboratories. Caveats were filed with the United States Patent Office, and Prelimi nary Specifications were filed on April 24, 1878 which resulted in the eventual issuance of a British patent.2 Despite this initial activity, the Edison involvement rapidly wound down by the end of that summer. In September a fatal mistake occurred-final specifications were supplied for the British patent, but the equiva lent American applications were neglected. In December, an attempt was made to rectify the omission by predating a series of applications, but the U.S. Patent Office refused to allow this and the matter had to be dropped. Except for a patent applied for on March 29, 1879 and granted in 1880 the phonograph seems to have been completely abandoned by Edison in favor of his new interest in the electric light.3 During the first half of the eighties there is no evidence whatsoever of any phono graph activity emanating from Menlo Park. However, Edward H. Johnson, who had done much experimenting for the Edison Speaking Phonograph Company, did be come involved in some experimenting after his return from England in 1883-enough so for Bergmann and Company to bill the group for 192 1/2 hours of experimental work.4 Edison had become completely disenchanted and reasoned that the concept of the phonograph was incapable offurther developments. The members of the Edison Speak ing Phonograph Company were delighted to relieve Edison of the responsibility for further experimenting when he released them from the necessity of investing further capital. -
Alexander Graham Bell Sample
TM For action-packed nonfiction, turn to Capstone’s Graphic Library. These vivid, dynamic books present high-interest nonfiction in graphic novel format. An additional information TM section provides key facts for further understanding. TM world-changing eventss unfold before your eye A LEXANDER in the inventions and . discovery set TM Check out these other y titles: G inventions and discover RAHAM Alexander Graham Bell and the Telephone B Hedy Lamarr and a Secret Communication System TM ELL Henry Ford and the Model T Jake Burton Carpenter and the Snowboard AND Johann Gutenberg and the Printing Press THE Jonas Salk and the Polio Vaccine TELEPHONE TELEPHONE Levi Strauss and Blue Jeans TELEPHONE Madam C. J. Walker and New Cosmetics Marie Curie and Radioactivity Philo Farnsworth and the Television Steve Jobs, Steve Wozniak, and the Personal Computer Thomas Edison and the Lightbulb TM RL: 4 IL: 3-9 ISBN-13: 978-0-7368-6478-7 Fandel ISBN-10: 0-7368-6478-4 /Tucker www.capstonepress.com by Jennifer Fandel Reinforced Library Binding illustrated by Keith Tucker TM by Jennifer Fandel illustrated by Keith Tucker Consultant: Michael E. Gorman Professor of Science, Technology, and Society University of Virginia Charlottesville, Virginia Mankato, Minnesota Graphic Library is published by Capstone Press, 151 Good Counsel Drive, P.O. Box 669, Mankato, Minnesota 56002. www.capstonepress.com Copyright © 2007 by Capstone Press. All rights reserved. No part of this publication may be reproduced in whole or in part, or stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without written permission of the publisher. -
Alexander Graham Bell 1847-1922
NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA BIOGRAPHICAL MEMOIRS VOLUME XXIII FIRST MEMOIR BIOGRAPHICAL MEMOIR OF ALEXANDER GRAHAM BELL 1847-1922 BY HAROLD S. OSBORNE PRESENTED TO THE ACADEMY AT THE ANNUAL MEETING, 1943 It was the intention that this Biographical Memoir would be written jointly by the present author and the late Dr. Bancroft Gherardi. The scope of the memoir and plan of work were laid out in cooperation with him, but Dr. Gherardi's untimely death prevented the proposed collaboration in writing the text. The author expresses his appreciation also of the help of members of the Bell family, particularly Dr. Gilbert Grosvenor, and of Mr. R. T. Barrett and Mr. A. M. Dowling of the American Telephone & Telegraph Company staff. The courtesy of these gentlemen has included, in addition to other help, making available to the author historic documents relating to the life of Alexander Graham Bell in the files of the National Geographic Society and in the Historical Museum of the American Telephone and Telegraph Company. ALEXANDER GRAHAM BELL 1847-1922 BY HAROLD S. OSBORNE Alexander Graham Bell—teacher, scientist, inventor, gentle- man—was one whose life was devoted to the benefit of mankind with unusual success. Known throughout the world as the inventor of the telephone, he made also other inventions and scientific discoveries of first importance, greatly advanced the methods and practices for teaching the deaf and came to be admired and loved throughout the world for his accuracy of thought and expression, his rigid code of honor, punctilious courtesy, and unfailing generosity in helping others. -
The Marriage That Almost Was Western Union Has Always Been R.Idiculed for Rejecting the All Telephone
RETROSPECTIVE .Innovation The marriage that almost was Western Union has always been r.idiculed for rejecting the telephone. But what actually happened wasn't so ridiculous after all The hirth of the telephone.,-one hundred years ago railway and illuminating gas to Cambridge, Mass. this month-is a fascinating story of the geJ;Jius and Long intrigued by telegraphy, he decided to do persistence of on.e man. In addition, it is an instruc something about what he called "this monopoly tive demonstration of how an industrial giant, in with its inflated capital which serves its stockhold this case the Western Union Telegraph Co., can ers better than the 'public and whose:rates are ex miss its chance to foster an industry-creating orbitant and prohibiting of many kinds of busi breakthrough-something that has happened again ness." Between 1868 and 1874, he lobbied unceas and again in electronics and other fields. ingly, shuttling back and forth betweep. homes in Between ·1875 and 1879, Western Union's chiefs Boston and Washington. for a private "postal tele engaged in an intricate minuet with Alexander graph company" to be chartered by Congress but Graham Bell and his associates. On more than one with Hubbard and some of his friends among the occasion, the telegraph colossus came excruciating incorporators. As Hubbard envisioned it, the com ly close to absorbing the small group of ~ntre pany would build telegraph lines along the nation's preneurs, That the absorption was finally avoided rail and post roads and contract with the Post was probably the result of a technological gamble Office Department to send telegrams on its wires ~t that simply didn't payoff, as rates roughly half those being charged by Western ••• The place: the ollie of well as a clash of personali Union. -
TRACING the DISCOURSE of AMERICAN EXCEPTIONALISM by Aron Tabor
DOES EXCEPTION PROVE THE RULE? TRACING THE DISCOURSE OF AMERICAN EXCEPTIONALISM By Aron Tabor Submitted to Central European University Doctoral School of Political Science, Public Policy and International Relations In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Political Science Supervisor: Alexander Astrov Word Count: 91,719 Budapest, Hungary 2019 ii Declaration I hereby declare that no parts of this thesis have been accepted for any other degrees in any other institutions. This thesis contains no material previously written and/or published by another person, except where appropriate acknowledgement is made in the form of bibliographical reference. Aron Tabor April 26, 2019 iii iv Abstract The first two decades of the twenty-first century saw an unprecedented proliferation of the discourse of American exceptionalism both in scholarly works and in the world of politics; several recent contributions have characterized this notion in the context of a set of beliefs that create, construct, (re-)define and reproduce a particular foreign policy identity. At the same time, some authors also note that the term “American exceptionalism” itself was born in a specific discourse within U.S. Communism, and, for a period, it was primarily understood with reference to the peculiar causes behind the absence of a strong socialist movement in the United States. The connection between this original meaning and the later usage is not fully explored; often it is assumed that “exceptionalism” existed before the label was created as the idea is traced back to the founding of the American nation or even to the colonial period. -
George Kennan and the Challenge of Siberia
George Kennan and the Challenge of Siberia NICHOLAS DANILOFF he small boy pressed his nose against the window. He could hardly pass up T the chance to see the doctor treat his playmate, whose arm had been man- gled in the cogwheels of a mill. Through the pane, the boy spied the surgeon unsheathe a saw and carefully draw its razor-sharp teeth across the injured arm below the elbow. With horror, many years later, the boy at the window would describe the amputation: The surgeon accidentally let slip the end of one of the severed arteries and a jet of warm blood spurted from the stump of the upper arm to the inside of the window pane against which my face was pressed. The effect upon me was a sensation that I never felt before in all my boyish life—a sensation of deadly nausea, faintness and overwhelming fear.1 The peeping boy of 1855 would grow up to be the adventurous traveler George Kennan, a cousin twice removed of the twentieth-century George F. Kennan, American ambassador to Stalin’s Russia. Years after the operation, the nineteenth- century Kennan would succeed in amputating his own insecurities to brave the wilds of Siberia, to expose the horrors of the Russian penal system, and to become America’s first great authority on Russia. George Kennan, the elder, first intrigued me when I worked in Moscow as a journalist during the cold war over a hundred years later. I was drawn into the search for Kennan’s traces when I began researching the life of my own great- great-grandfather, a Russian exiled to Siberia for conspiring to overthrow the czar in 1825. -
Notes by Charles Sumner Tainter, October 23, 1881, with Transcript
Library of Congress Notes by Charles Sumner Tainter, October 23, 1881, with transcript Copied from pages 97 to 113 inclusive in Laboratory Rough Notes, Vol. XIII. Folder, Graphophone, The Graphophone. 1879–99 Sunday Oct. 23d, 1881. drawer 12 The following is a copy of a portion of the written matter contained in the sealed package marked “Package No. 1. V. L. A.” which was deposited in the Smithsonian Institution October 20th 1881.— Sumner Tainter. (Inscription upon outside cover of Package.—) Washington, D. C. October 20th 1881. Package No. 1. V. L. A. Deposited in the Smithsonian Institution on the 20th day of October 1881 by the undersigned, on behalf of Alexander Graham Bell, Sumner Tainter, and Chichester A. Bell. (signed) Sumner Tainter. Chichester A. Bell. (Portion of written matter inside Package.—) We, Alexander Graham Bell; Sumner Tainter; and Chichester A. Bell, having associated ourselves together for the joint prosecution of inventions and experiments, desire to put on record a process and apparatus which we have devised for recording sound-vibrations, and for reproducing the sounds from the record, without deterioration of the record itself. Notes by Charles Sumner Tainter, October 23, 1881, with transcript http://www.loc.gov/resource/magbell.25100201 Library of Congress For some months previous to the present date (September 1881) our invention has been practically perfected, but we still withhold publication in the hope that our continued efforts may result in a more simple form of apparatus, adapted for popular use. The possibility of reproducing the sounds of articulate speech from a record was demonstrated several years ago by the construction of the Edison Phonograph, but 2 the articulation of the instrument was, at best, very imperfect and disagreeable; and the indented tinfoil record soon became deteriorated by use, so that the words impressed upon it ceased to be reproduced after a very few repetitions. -
Genius at Work
For Vera Williams Harley, and in loving memory of George Ernest Esmond Harley, whojrst told me stories of Nova Scotia Copyright @I 1982 by Dorothy Harley Eber All rights reserved First published in 1982 by The Viking Press 625 Madison Avenue, New York, N.Y. 10022 Library of Congress Cataloging in Publication Data Eber, Dorothy. Genius at work. (A Studio book) Bibliography: p. 9 1. Bell, Alexander Graham, 1847- 1922. 2. Inventors- q); J' United States-Biography. I. Title. TK6143.B4E23 621.385'092'4 [B] 81-1 1670 ISBN 0-670-27389-9 AACR2 Printed in the United States of America Set in Baskerville Designed by Michael Shroyer PROLOGUE: An Interview with R. Buckminster Fuller/9 ARRIVALS/ 13 THE INVENTOR AT HOME/31 EXPLORING RIGHT AND LEFT/67 THE TETRAHEDRON/85 GETTING INTO THE AIR/103 FLIGHT/ 117 THE HYDROFOIL YEARS/ 135 RIDING THE HD-4/159 COURTING THE ADMIRALTY/ 169 FINAL DAYS/ 17 7 EPILOGUE/ 18 1 Reference Notes/ 183 Bibliography/ 187 Index/ 189 "Mr. Baldwin is designing another boat from which he and Alec Opposite page: expect wonderful things," wrote Mabel Bell in August of 1908. In Bell in his dressing gown in his fact the boat, built during the summer of the A.E.A.'s existence, later years, perhaps working far into the night. (I. D. Boyce) was designed in the hopes of its becoming an airplane. The aim of its designers was that it should rise up out of the water on hydro- foils and then take off and fly. This failed to happen, and so the Dhonnas Beag-Gaelic for "little devil" and dubbed thus by a Beinn Bhreagh workman, according to C. -
1 the Association for Diplomatic Studies and Training Foreign Affairs
The Association for Diplomatic Studies and Training Foreign Affairs Oral History Project ARNOLD DENYS Interviewed by: Self Copyright 1998 ADST TABLE OF CONTENTS Acknowledgements A out the Author Note to the Reader Preface A Crisis in the Life of a Foreign Service Officer My Beginnings (S Citi)enship Return to Civilian Life Panama Assignment Crisis in Panama London Egypt Athens Mexico Canada ,ashington, DC Antwerp ,ashington to Tijuana Tijuana Tijuana to Retirement Conclusion DIARY Son of Flanders The Making of a Consul. Diary of an American Foreign Service Officer In Memory of Emiel Denys 01103411767 8odelieve Maria Denys 01101411117 AC9NO,LED8MENTS 1 I feel deep gratitude to my late parents for their encouragement to write this memoir. The late Mrs. 9atherine McCook 9nox, an art historian from ,ashington, DC, was in great part responsi le for my efforts in compiling letters and notes on the American Foreign Service. My thanks also go to Rhoda Riddell, Ph.D., a writer and teacher, who transcri ed and edited my handwritten account, which was taken from my diary. I also wish to thank Art Drexler, who completed the editing and prepared the book for printing. I wish also to thank the following persons, whom I have known in the long course of my foreign service career, and who have meant so much to me both personally and professionally, and deserve special acknowledgment. Consul 8eneral John D. Barfield Vice Consul 0Ret.7 Frank J. Barrett Miguel Angel 8arcia Charles Stuart 9ennedy, Director of the Association for Diplomatic Studies, who inspired me with his work on the Foreign Affairs Oral History Program.