Lee De Forest

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Lee de Forest

Author : Mike Adams
Publisher : Springer Science & Business Media
ISBN 13 : 1461404185
Total Pages : 562 pages
Book Rating : 4.4/5 (614 download)

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Book Synopsis Lee de Forest by : Mike Adams

Download or read book Lee de Forest written by Mike Adams and published by Springer Science & Business Media. This book was released on 2011-10-17 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Lee de Forest and the Fatherhood of Radio

Author : James A. Hijiya
Publisher : Lehigh University Press
ISBN 13 : 9780934223232
Total Pages : 190 pages
Book Rating : 4.2/5 (232 download)

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Book Synopsis Lee de Forest and the Fatherhood of Radio by : James A. Hijiya

Download or read book Lee de Forest and the Fatherhood of Radio written by James A. Hijiya and published by Lehigh University Press. This book was released on 1992 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book is not so much an analysis of de Forest's contribution to technology as it is a chronicle of his spiritual quest. Lee de Forest was an important inventor, and this biography attempts to explain what moved him to become one. It tries to show how - in a universe from which deity had seemingly disappeared - de Forest's devotion to invention was part of his search for a new light. The book is not a study in the history of technology but in the history of the religion of technology." "In 1906, de Forest created the "Audion," the three-electrode vacuum tube, which became the foundation of the electronics industry for half a century. He was a pioneer in radio and talking pictures, and he worked on projects ranging from television to solar energy. Holder of more than three hundred patents, he was one of the most prolific inventors in American history." "But he was more than that. Lee de Forest had an immense curiosity that extended beyond science and engineering to politics, literature, and religion. His active and far-ranging mind became a register for many social and intellectual events during his long life: from Populism to McCarthyism, and from Darwinism to agnosticism. But while his interests were diverse, his vision was not. For him invention was not merely a vocation but a worldview. He represented a technological progressivism that advocated reform, but reform stemming less from social engineering than from real engineering. Although he favored certain improvements in law and education, he did not think that these would be the basis of social transformation. Instead, he believed that inventions - ranging from radios to war planes - would reform the human condition and that the future was more in the hands of inventors than statesmen. The millenium would be a technical innovation, with himself as one of its principal inventors." "As a young man, de Forest came to spurn conventional notions of an immortal soul; but he never ceased to seek ways to overcome death - not merely the physical death of the body but also the spiritual death of living without purpose. The fame of his inventions would, he hoped, keep him forever alive in the memory of posterity. Moreover, the good that his inventions did for humanity - his contribution to progress - would give meaning to his existence. For Lee de Forest, then, invention was a substitute for religion. By helping to build the future, he sought to become an indelible part of it."--BOOK JACKET.Title Summary field provided by Blackwell North America, Inc. All Rights Reserved

Empire of the Air

Author : Tom Lewis
Publisher : Cornell University Press
ISBN 13 : 1501759345
Total Pages : 607 pages
Book Rating : 4.5/5 (17 download)

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Book Synopsis Empire of the Air by : Tom Lewis

Download or read book Empire of the Air written by Tom Lewis and published by Cornell University Press. This book was released on 2021-09-15 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: Empire of the Air tells the story of three American visionaries—Lee de Forest, Edwin Howard Armstrong, and David Sarnoff—whose imagination and dreams turned a hobbyist's toy into radio, launching the modern communications age. Tom Lewis weaves the story of these men and their achievements into a richly detailed and moving narrative that spans the first half of the twentieth century, a time when the American romance with science and technology was at its peak. Empire of the Air is a tale of pioneers on the frontier of a new technology, of American entrepreneurial spirit, and of the tragic collision between inventor and corporation.

Two Trees Make a Forest

Author : Jessica J. Lee
Publisher : Catapult
ISBN 13 : 1646220005
Total Pages : 305 pages
Book Rating : 4.6/5 (462 download)

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Book Synopsis Two Trees Make a Forest by : Jessica J. Lee

Download or read book Two Trees Make a Forest written by Jessica J. Lee and published by Catapult. This book was released on 2020-08-04 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This "stunning journey through a country that is home to exhilarating natural wonders, and a scarring colonial past . . . makes breathtakingly clear the connection between nature and humanity, and offers a singular portrait of the complexities inherent to our ideas of identity, family, and love" (Refinery29). A chance discovery of letters written by her immigrant grandfather leads Jessica J. Lee to her ancestral homeland, Taiwan. There, she seeks his story while growing closer to the land he knew. Lee hikes mountains home to Formosan flamecrests, birds found nowhere else on earth, and swims in a lake of drowned cedars. She bikes flatlands where spoonbills alight by fish farms, and learns about a tree whose fruit can float in the ocean for years, awaiting landfall. Throughout, Lee unearths surprising parallels between the natural and human stories that have shaped her family and their beloved island. Joyously attentive to the natural world, Lee also turns a critical gaze upon colonialist explorers who mapped the land and named plants, relying on and often effacing the labor and knowledge of local communities. Two Trees Make a Forest is a genre–shattering book encompassing history, travel, nature, and memoir, an extraordinary narrative showing how geographical forces are interlaced with our family stories.

Wireless

Author : Sungook Hong
Publisher : MIT Press
ISBN 13 : 0262514192
Total Pages : 267 pages
Book Rating : 4.2/5 (625 download)

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Book Synopsis Wireless by : Sungook Hong

Download or read book Wireless written by Sungook Hong and published by MIT Press. This book was released on 2010-01-22 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new look at the early history of wireless communication. By 1897 Guglielmo Marconi had transformed James Clerk Maxwell's theory of electromagnetic waves into a workable wireless telegraphy system, and by 1907 Lee de Forest had invented the Audion, a feedback amplifier and oscillator that opened the way to practical radio transmission. Fifteen years after Marconi's invention, wireless had become an essential means of communication, as well as a hobby for many. This book offers a new perspective on the early days of wireless communication. Drawing on previously untapped archival evidence and recent work in the history and sociology of science and technology, it examines the substance and context of both experimental and theoretical aspects of engineering and scientific practices in the first years of this technology. It offers new insights into the relationship between Marconi and his scientific advisor, the physicist John Ambrose Fleming (inventor of the vacuum tube). It includes the full story of the infamous 1903 incident in which Marconi's opponent Nevil Maskelyne interfered with Fleming's public demonstration of Marconi's syntonic (tuning) system at the Royal Institution by sending derogatory messages from his own transmitter. The analysis of the Maskelyne affair highlights the struggle between Marconi and his opponents, the efficacy of early syntonic devices, Fleming's role as a public witness to Marconi's private experiments, and the nature of Marconi's "shows." It also provides a rare case study of how the credibility of an engineer can be created, consumed, and suddenly destroyed. The book concludes with a discussion of de Forest's Audion and the shift from wireless telegraphy to radio.

Lee de Forest Papers

Author : Lee De Forest
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Lee de Forest Papers by : Lee De Forest

Download or read book Lee de Forest Papers written by Lee De Forest and published by . This book was released on 1918 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2 letters (1 sheet, 1 page each). Letter to J. Duane Upton, Drake Memorial Museum, on printed letterhead of Lee de Forest Laboratories, 5106 Wilshire Boulevard, Los Angeles, 23 December 1940, concerning a manuscript of an article by de Forest titled "The birth of the vacuum tube". Letter to B.E. Tousley, Aerial League of America, on printed letterhead of De Forest Radio Telephone & Telegraph Co., 1391 Sedgwick Avenue, New York, 5 April 1918, concerning the league's recognition of radio engineers in aeronautics. The manuscript (2 sheets, 2 pages), signed at the end by de Forest, referenced in the 1940 letter is included.

Lee de Forest

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (854 download)

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Book Synopsis Lee de Forest by :

Download or read book Lee de Forest written by and published by . This book was released on 1937 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Autographed photograph letter typed, signed note America Lee de Forest (August 26, 1873 - June 30, 1961) was an American inventor with over 180 patents to his credit. De Forest invented the Audion, a vacuum tube that takes relatively weak electrical signals and amplifies them. De Forest is one of the fathers of the electronic age, as the Audion helped to usher in the widespread use of electronics. He is also credited with one of the principal inventions that brought sound to motion pictures. DeVry University was originally named DeForest Training School, after Lee De Forest, by its founder Dr. Herman A. DeVry, who was a friend and colleague of De Forest's.

The Continuous Wave

Author : Hugh G.J. Aitken
Publisher : Princeton University Press
ISBN 13 : 1400854601
Total Pages : 608 pages
Book Rating : 4.4/5 (8 download)

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Book Synopsis The Continuous Wave by : Hugh G.J. Aitken

Download or read book The Continuous Wave written by Hugh G.J. Aitken and published by Princeton University Press. This book was released on 2014-07-14 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hugh Aitken describes a critical period in the history of radio, when continuous wave technology first made reliable long-distance wireless communication possible and opened up opportunities for broadcasting voice and music. Originally published in 1985. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

ReMaking History, Volume 3

Author : William Gurstelle
Publisher : Maker Media, Inc.
ISBN 13 : 1680450689
Total Pages : 358 pages
Book Rating : 4.6/5 (84 download)

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Book Synopsis ReMaking History, Volume 3 by : William Gurstelle

Download or read book ReMaking History, Volume 3 written by William Gurstelle and published by Maker Media, Inc.. This book was released on 2017-02-23 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Makers of the Modern World is the third volume of William Gurstelle's unique, hands-on journey through history. Each chapter examines a remarkable character from the past, one of the people whose insights and inventions helped create our modern world. What sets this series apart from other history books - including other histories of technology - is that each chapter also includes step-by-step instructions for making your own version of the historical invention. History comes to life in a way you have never experienced before when you follow the inventors' steps and recreate the groundbreaking devices of the past with your own hands. This volume brings you to the early modern era and the invention of the electric light, the movie projector, and the automobile. Inside, you will discover: Alessandro Volta and Electroplating Humphrey Davy and the First Electric light George Cayley and the Aeronautical Glider The Lumiere Brothers and the Movie Projector Rudolf Diesel and the Automobile Engine Hans Goldschmidt and the Thermite Reaction August Mobius and the Mobius Strip Louis Poinsot's Loads, Moments, and Torques Be sure to also check out ReMaking History, Volume 1: Early Makers and ReMaking History Volume 2 :Industrial Revolutionaries.

Father of Radio

Author : Lee De Forest
Publisher :
ISBN 13 :
Total Pages : 502 pages
Book Rating : 4.:/5 (15 download)

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Book Synopsis Father of Radio by : Lee De Forest

Download or read book Father of Radio written by Lee De Forest and published by . This book was released on 1950 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

From Sawdust to Stardust

Author : Terry Lee Rioux
Publisher : Simon and Schuster
ISBN 13 : 1416500049
Total Pages : 385 pages
Book Rating : 4.4/5 (165 download)

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Book Synopsis From Sawdust to Stardust by : Terry Lee Rioux

Download or read book From Sawdust to Stardust written by Terry Lee Rioux and published by Simon and Schuster. This book was released on 2005-02-28 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the forty-year history of Star Trek®, none of the television show's actors are more beloved than DeForest Kelley. His portrayal of Leonard "Bones" McCoy, the southern physician aboard the Starship Enterprise™, brought an unaffected humanity to the groundbreaking space frontier series. Jackson DeForest Kelley came of age in Depression-era Georgia. He was raised on the sawdust trail, a preacher's kid steeped in his father's literal faith and judgment. But De's natural artistic gifts called him to a different way, and a visit to California at seventeen showed a bright new world. Theater and radio defined his early career -- but it was a World War II training film he made while serving in the Army Air Corps that led to his first Paramount Studios contract. After years of struggle, his lean, weathered look became well known in notable westerns and television programs such as You Are There and Bonanza. But his work on several pilots for writer-producer Gene Roddenberry changed his destiny and the course of cultural history. This thoroughly researched actor's life is about hard work and luck, loyalty and love. It is a journey that takes us all...from sawdust to stardust.

Electric Forest

Author : Tanith Lee
Publisher : Astra Publishing House
ISBN 13 : 0698404645
Total Pages : 194 pages
Book Rating : 4.6/5 (984 download)

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Book Synopsis Electric Forest by : Tanith Lee

Download or read book Electric Forest written by Tanith Lee and published by Astra Publishing House. This book was released on 2019-05-07 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now available in a redesigned edition, Tanith Lee's sci-fi classic of a woman's quest for acceptance through the transfer of her consciousness to an artificial body. In the futuristic world of Indigo, reproduction is controlled by the government, guaranteeing that every baby is happy, healthy, and beautiful. But mistakes happen, and a rare few babies are accidentally born biologically, like Magdala Cled. Because of her natural-born features, Magdala is an outcast in society--abandoned at birth, abused in the orphanage she grew up in, and branded with the cruel name "Ugly." But Magdala's world turns upside down when she's approached by Claudio Loro, a wealthy scientist who has created a beautiful artificial body. When he offers to transfer Magdala's consciousness into the body, she cannot refuse the priceless opportunity for a new, beautiful life. However, unbeknownst to her, Claudio has crafted her new body to resemble Christophine del Jan, his rival scientist and former lover. Now Magdala must impersonate Christophine to infiltrate high society, court Claudio's advances, and decide whose side she is truly on--all while maintaining her real body lest it die...and she die with it.

Forest of Souls

Author : Lori M. Lee
Publisher : Page Street YA
ISBN 13 : 1624149286
Total Pages : 299 pages
Book Rating : 4.6/5 (241 download)

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Book Synopsis Forest of Souls by : Lori M. Lee

Download or read book Forest of Souls written by Lori M. Lee and published by Page Street YA. This book was released on 2020-06-23 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Danger lurks within the roots of Forest of Souls, an epic, unrelenting tale of destiny and sisterhood, perfect for fans of Naomi Novik, Susan Dennard, and Netflix's The Witcher! "A tantalizing beginning to a rich new fantasy series.” —Traci Chee, NYT bestselling author of The Reader trilogy "Absolutely enchanting.” – Natalie C. Parker, author of Seafire "You won’t want to escape.” – Sarah Henning, author of the Sea Witch "Will leave you shouting sisters unite!” – Mindee Arnett, author of Onyx & Ivory and Avalon Sirscha Ashwyn comes from nothing, but she’s intent on becoming something. After years of training to become the queen’s next royal spy, her plans are derailed when shamans attack and kill her best friend Saengo. And then Sirscha, somehow, restores Saengo to life. Unveiled as the first soulguide in living memory, Sirscha is summoned to the domain of the Spider King. For centuries, he has used his influence over the Dead Wood—an ancient forest possessed by souls—to enforce peace between the kingdoms. Now, with the trees growing wild and untamed, only a soulguide can restrain them. As war looms, Sirscha must master her newly awakened abilities before the trees shatter the brittle peace, or worse, claim Saengo, the friend she would die for.

Signor Marconi's Magic Box

Author : Gavin Weightman
Publisher : Da Capo Press
ISBN 13 : 0786748540
Total Pages : 362 pages
Book Rating : 4.7/5 (867 download)

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Book Synopsis Signor Marconi's Magic Box by : Gavin Weightman

Download or read book Signor Marconi's Magic Box written by Gavin Weightman and published by Da Capo Press. This book was released on 2009-06-16 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Elizabeth Cady Stanton as Revealed in Her Letters, Diary and Reminiscences

Author : Elizabeth Cady Stanton
Publisher :
ISBN 13 :
Total Pages : 402 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Elizabeth Cady Stanton as Revealed in Her Letters, Diary and Reminiscences by : Elizabeth Cady Stanton

Download or read book Elizabeth Cady Stanton as Revealed in Her Letters, Diary and Reminiscences written by Elizabeth Cady Stanton and published by . This book was released on 1922 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Saga of the Vacuum Tube

Author : Gerald F. J. Tyne
Publisher :
ISBN 13 : 9780672214714
Total Pages : 494 pages
Book Rating : 4.2/5 (147 download)

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Book Synopsis Saga of the Vacuum Tube by : Gerald F. J. Tyne

Download or read book Saga of the Vacuum Tube written by Gerald F. J. Tyne and published by . This book was released on 1977 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Shinrin-Yoku

Author : Dr Qing Li
Publisher : Penguin UK
ISBN 13 : 0241346967
Total Pages : 236 pages
Book Rating : 4.2/5 (413 download)

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Book Synopsis Shinrin-Yoku by : Dr Qing Li

Download or read book Shinrin-Yoku written by Dr Qing Li and published by Penguin UK. This book was released on 2018-04-05 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shinrin = Forest Yoku = Bathing Shinrin-Yoku or forest bathing is the practice of spending time in the forest for better health, happiness and a sense of calm. A pillar of Japanese culture for decades, Shinrin-Yoku is a way to reconnect with nature, from walking mindfully in the woods, to a break in your local park, to walking barefoot on your lawn. Forest Medicine expert, Dr Qing Li's research has proven that spending time around trees (even filling your home with house plants and vaporising essential tree oils) can reduce blood pressure, lower stress, boost energy, boost immune system and even help you to lose weight. Along with his years of ground-breaking research, anecdotes on the life-changing power of trees, Dr Li provides here the practical ways for you to try Shinrin-Yoku for yourself.