Who Invented the Radio?

Who Invented the Radio? PDF Author: Susan E. Hamen
Publisher: Lerner Publications (Tm)
ISBN: 1512483206
Category : Juvenile Nonfiction
Languages : en
Pages : 36

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Book Description
The story of how Nikola Tesla and Guglielmo Marconi faced off in a race to invent the radio will have readers at the edge of their seats!

Who Invented the Radio?

Who Invented the Radio? PDF Author: Susan E. Hamen
Publisher: Lerner Publications (Tm)
ISBN: 1512483206
Category : Juvenile Nonfiction
Languages : en
Pages : 36

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Book Description
The story of how Nikola Tesla and Guglielmo Marconi faced off in a race to invent the radio will have readers at the edge of their seats!

Charles Herrold, Inventor of Radio Broadcasting

Charles Herrold, Inventor of Radio Broadcasting PDF Author: Gordon Greb
Publisher: McFarland
ISBN: 0786483598
Category : Performing Arts
Languages : en
Pages : 260

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Book Description
Still broadcasting today, the world's first radio station was invented by Charles Herrold in 1909 in San Jose, California. His accomplishment was first documented in a notarized statement written by him and published in the Electro-Importing Company's 1910 catalog: "We have given wireless phone concerts to amateur wireless men throughout the Santa Clara Valley." Being the first to "broadcast" radio entertainment and information to a mass audience puts him at the forefront of modern day mass communication. This biography of Charles Herrold focuses on how he used primitive technology to get on the air. Today it is a 50,000-watt station (KCBS, in San Francisco). The authors describe Herrold's story as one of early triumph and final failure, the story of an "everyman," an individual who was an innovator but never received recognition for his work and, as a result, died penniless. His most important work was done between 1912 and 1917, and following World War I, he received a license and operated station KQW for several years before running out of money. Herrold then worked as a radio time salesman, an audiovisual technician for a high school, and a janitor at a local naval facility, still telling anyone who would listen to him that he was the father of radio. The authors also consider some other early inventors, and the directions that their work took.

Guglielmo Marconi

Guglielmo Marconi PDF Author: Victoria Sherrow
Publisher: Enslow Publishing
ISBN: 9780766022805
Category : Inventors
Languages : en
Pages : 0

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Book Description
Guglielmo Marconi is one of the most important inventors of the modern age. Prior to Marconi's work, telegraph signals had to be transmitted through electric wires, but in 1895, Marconi successfully sent the first telegraph signals through the air. In 1901, Marconi transmitted the first wireless communication across the Atlantic Ocean. For his groundbreaking work with wireless transmissions, Marconi was awarded the Nobel Prize for physics in 1909. In addition to the development of radio, Marconi would also do pioneering work with short waves and microwaves. Marconi was born in Bologna, Italy. As a child, Marconi demonstrated a strong interest in science. Although he failed the University of Bologna entrance exam, he decided to continue pursuing scientific studies on his own. In addition to the Nobel Prize he later earned, Marconi also won many other honors for his revolutionary work in electronic communication. Book jacket.

Wireless

Wireless PDF Author: Sungook Hong
Publisher: MIT Press
ISBN: 9780262082983
Category : History
Languages : en
Pages : 284

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Book Description
A new look at the early history of wireless communication.

Marconi

Marconi PDF Author: Marc Raboy
Publisher: Oxford University Press
ISBN: 0199313601
Category : Technology & Engineering
Languages : en
Pages : 888

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Book Description
A little over a century ago, the world went wireless. Cables and all their limiting inefficiencies gave way to a revolutionary means of transmitting news and information almost everywhere, instantaneously. By means of "Hertzian waves," as radio waves were initially known, ships could now make contact with other ships (saving lives, such as on the doomed S.S. Titanic); financial markets could coordinate with other financial markets, establishing the price of commodities and fixing exchange rates; military commanders could connect with the front lines, positioning artillery and directing troop movements. Suddenly and irrevocably, time and space telescoped beyond what had been thought imaginable. Someone had not only imagined this networked world but realized it: Guglielmo Marconi. As Marc Raboy shows us in this enthralling and comprehensive biography, Marconi was the first truly global figure in modern communications. Born to an Italian father and an Irish mother, he was in many ways stateless, working his cosmopolitanism to advantage. Through a combination of skill, tenacity, luck, vision, and timing, Marconi popularized--and, more critically, patented--the use of radio waves. Soon after he burst into public view at the age of 22 with a demonstration of his wireless apparatus in London, 1896, he established his Wireless Telegraph & Signal Company and seemed unstoppable. He was decorated by the Czar of Russia, named an Italian Senator, knighted by King George V of England, and awarded the Nobel Prize for Physics--all before the age of 40. Until his death in 1937, Marconi was at the heart of every major innovation in electronic communication, courted by powerful scientific, political, and financial interests. He established stations and transmitters in every corner of the globe, from Newfoundland to Buenos Aires, Hawaii to Saint Petersburg. Based on original research and unpublished archival materials in four countries and several languages, Raboy's book is the first to connect significant parts of Marconi's story, from his early days in Italy, to his groundbreaking experiments, to his protean role in world affairs. Raboy also explores Marconi's relationshps with his wives, mistresses, and children, and examines in unsparing detail the last ten years of the inventor's life, when he returned to Italy and became a pillar of Benito Mussolini's fascist regime. Raboy's engrossing biography, which will stand as the authoritative work of its subject, proves that we still live in the world Marconi created.

Early FM Radio

Early FM Radio PDF Author: Gary L. Frost
Publisher: JHU Press
ISBN: 0801899133
Category : Technology & Engineering
Languages : en
Pages : 207

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Book Description
The commonly accepted history of FM radio is one of the twentieth century’s iconic sagas of invention, heroism, and tragedy. Edwin Howard Armstrong created a system of wideband frequency-modulation radio in 1933. The Radio Corporation of America (RCA), convinced that Armstrong’s system threatened its AM empire, failed to develop the new technology and refused to pay Armstrong royalties. Armstrong sued the company at great personal cost. He died despondent, exhausted, and broke. But this account, according to Gary L. Frost, ignores the contributions of scores of other individuals who were involved in the decades-long struggle to realize the potential of FM radio. The first scholar to fully examine recently uncovered evidence from the Armstrong v. RCA lawsuit, Frost offers a thorough revision of the FM story. Frost’s balanced, contextualized approach provides a much-needed corrective to previous accounts. Navigating deftly through the details of a complicated story, he examines the motivations and interactions of the three communities most intimately involved in the development of the technology—Progressive-era amateur radio operators, RCA and Westinghouse engineers, and early FM broadcasters. In the process, Frost demonstrates the tension between competition and collaboration that goes hand in hand with the emergence and refinement of new technologies. Frost's study reconsiders both the social construction of FM radio and the process of technological evolution. Historians of technology, communication, and media will welcome this important reexamination of the canonic story of early FM radio.

Signor Marconi's Magic Box

Signor Marconi's Magic Box PDF Author: Gavin Weightman
Publisher: Da Capo Press
ISBN: 0786748540
Category : History
Languages : en
Pages : 362

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Book Description
The world at the turn of the twentieth century was in the throes of "Marconi-mania"-brought on by an incredible invention that no one could quite explain, and by a dapper and eccentric figure (who would one day win the newly minted Nobel Prize) at the center of it all. At a time when the telephone, telegraph, and electricity made the whole world wonder just what science would think of next, the startling answer had come in 1896 in the form of two mysterious wooden boxes containing a device one Guglielmo Marconi had rigged up to transmit messages "through the ether." It was the birth of the radio, and no scientist in Europe or America, not even Marconi himself, could at first explain how it worked -- it just did. And no one knew how far these radio waves could travel, until 1903, when a message from President Theodore Roosevelt to the king of England flashed from Cape Cod to Cornwall clear across the Atlantic.Here is a rich portrait of the man and his era-and a captivating tale of science and scientists, business and businessmen. There are stories of British blowhards, American con artists-and Marconi himself: a character par excellence, who eventually winds up a virtual prisoner of his worldwide fame and fortune.

History of Wireless

History of Wireless PDF Author: T. K. Sarkar
Publisher: John Wiley & Sons
ISBN: 0471718149
Category : Technology & Engineering
Languages : en
Pages : 692

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Book Description
Important new insights into how various components and systems evolved Premised on the idea that one cannot know a science without knowing its history, History of Wireless offers a lively new treatment that introduces previously unacknowledged pioneers and developments, setting a new standard for understanding the evolution of this important technology. Starting with the background-magnetism, electricity, light, and Maxwell's Electromagnetic Theory-this book offers new insights into the initial theory and experimental exploration of wireless. In addition to the well-known contributions of Maxwell, Hertz, and Marconi, it examines work done by Heaviside, Tesla, and passionate amateurs such as the Kentucky melon farmer Nathan Stubblefield and the unsung hero Antonio Meucci. Looking at the story from mathematical, physics, technical, and other perspectives, the clearly written text describes the development of wireless within a vivid scientific milieu. History of Wireless also goes into other key areas, including: The work of J. C. Bose and J. A. Fleming German, Japanese, and Soviet contributions to physics and applications of electromagnetic oscillations and waves Wireless telegraphic and telephonic development and attempts to achieve transatlantic wireless communications Wireless telegraphy in South Africa in the early twentieth century Antenna development in Japan: past and present Soviet quasi-optics at near-mm and sub-mm wavelengths The evolution of electromagnetic waveguides The history of phased array antennas Augmenting the typical, Marconi-centered approach, History of Wireless fills in the conventionally accepted story with attention to more specific, less-known discoveries and individuals, and challenges traditional assumptions about the origins and growth of wireless. This allows for a more comprehensive understanding of how various components and systems evolved. Written in a clear tone with a broad scientific audience in mind, this exciting and thorough treatment is sure to become a classic in the field.

Lee de Forest

Lee de Forest PDF Author: Mike Adams
Publisher: Springer Science & Business Media
ISBN: 1461404185
Category : Technology & Engineering
Languages : en
Pages : 562

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Book Description
The life-long inventor, Lee de Forest invented the three-element vacuum tube used between 1906 and 1916 as a detector, amplifier, and oscillator of radio waves. Beginning in 1918 he began to develop a light valve, a device for writing and reading sound using light patterns. While he received many patents for his process, he was initially ignored by the film industry. In order to promote and demonstrate his process he made several hundred sound short films, he rented space for their showing; he sold the tickets and did the publicity to gain audiences for his invention. Lee de Forest officially brought sound to film in 1919. Lee De Forest: King of Radio, Television, and Film is about both invention and early film making; de Forest as the scientist and producer, director, and writer of the content. This book tells the story of de Forest’s contribution in changing the history of film through the incorporation of sound. The text includes primary source historical material, U.S. patents and richly-illustrated photos of Lee de Forest’s experiments. Readers will greatly benefit from an understanding of the transition from silent to audio motion pictures, the impact this had on the scientific community and the popular culture, as well as the economics of the entertainment industry.

That's the Way It Is

That's the Way It Is PDF Author: Charles L. Ponce de Leon
Publisher: University of Chicago Press
ISBN: 022642152X
Category : History
Languages : en
Pages : 331

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Book Description
Ever since Newton Minow taught us sophisticates to bemoan the descent of television into a vast wasteland, the dyspeptic chorus of jeremiahs who insist that television news in particular has gone from gold to dross gets noisier and noisier. Charles Ponce de Leon says here, in effect, that this is misleading, if not simply fatuous. He argues in this well-paced, lively, readable book that TV news has changed in response to broader changes in the TV industry and American culture. It is pointless to bewail its decline. "That s the Way It Is "gives us the very first history of American television news, spanning more than six decades, from Camel News Caravan to Countdown with Keith Oberman and The Daily Show. Starting in the latter 1940s, television news featured a succession of broadcasters who became household names, even presences: Eric Sevareid, Walter Cronkite, David Brinkley, Peter Jennings, Brian Williams, Katie Couric, and, with cable expansion, people like Glenn Beck, Jon Stewart, and Bill O Reilly. But behind the scenes, the parallel story is just as interesting, involving executives, producers, and journalists who were responsible for the field s most important innovations. Included with mainstream network news programs is an engaging treatment of news magazines like "60 Minutes" and "20/20, " as well as morning news shows like "Today" and "Good Morning America." Ponce de Leon gives ample attention to the establishment of cable networks (CNN, and the later competitors, Fox News and MSNBC), mixing in colorful anecdotes about the likes of Roger Ailes and Roone Arledge. Frothy features and other kinds of entertainment have been part and parcel of TV news from the start; viewer preferences have always played a role in the evolution of programming, although the disintegration of a national culture since the 1970s means that most of us no longer follow the news as a civic obligation. Throughout, Ponce de Leon places his history in a broader cultural context, emphasizing tensions between the public service mission of TV news and the quest for profitability and broad appeal."