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Beam

Author: Jeff Hecht
Publisher: Oxford University Press
ISBN: 0198032498
Size: 64.33 MB
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In 1954, Charles Townes invented the laser's microwave cousin, the maser. The next logical step was to extend the same physical principles to the shorter wavelengths of light, but the idea did not catch fire until October 1957, when Townes asked Gordon Gould about Gould's research on using light to excite thallium atoms. Each took the idea and ran with it. The independent-minded Gould sought the fortune of an independent inventor; the professorial Townes sought the fame of scientific recognition. Townes enlisted the help of his brother-in-law, Arthur Schawlow, and got Bell Labs into the race. Gould turned his ideas into a patent application and a million-dollar defense contract. They soon had company. Ali Javan, one of Townes's former students, began pulling 90-hour weeks at Bell Labs with colleague Bill Bennett. And far away in California a bright young physicist named Ted Maiman became a very dark horse in the race. While Schawlow proclaimed that ruby could never make a laser, Maiman slowly convinced himself it would. As others struggled with recalcitrant equipment and military secrecy, Maiman built a tiny and elegant device that fit in the palm of his hand. His ruby laser worked the first time he tried it, on May 16, 1960, but afterwards he had to battle for acceptance as the man who made the first laser. Beam is a fascinating tale of a remarkable and powerful invention that has become a symbol of modern technology.

Beam Weapons

Author: Jeff Hecht
Publisher: Jeff Hecht
ISBN: 0306415461
Size: 48.98 MB
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Beam Weapons examines the directed-energy weapons that became a central part of the Reagan Administration's Strategic Defense Initiative, better known as "Star Wars." First published in 1984, it describes the science and technology behind directed energy weapons, the state of the art at the time Reagan launched the program, and the military issues involved. The first full-length book published on the topic, it exhaustively documents the technical and military realities and uncertainties.

Lasers Death Rays And The Long Strange Quest For The Ultimate Weapon

Author: Jeff Hecht
Publisher: Prometheus Books
ISBN: 1633884619
Size: 66.76 MB
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The whole story of laser weapons with a focus on its many interesting characters and sometimes bizarre schemes The laser--a milestone invention of the mid-twentieth century--quickly captured the imagination of the Pentagon as the key to the ultimate weapon. Veteran science writer Jeff Hecht tells the inside story of the adventures and misadventures of scientists and military strategists as they exerted Herculean though often futile efforts to adapt the laser for military uses. From the 1950s' sci-fi vision of the "death ray," through the Reagan administration's "Star Wars" missile defense system, to more promising developments today, Hecht provides an entertaining history. As the author illustrates, there has always been a great deal of enthusiasm and false starts surrounding lasers. He describes a giant laser that filled a Boeing 747, lasers made from rocket engines, plans for an orbiting fleet of robotic laser battle stations to destroy nuclear missiles, claims that nuclear bombs could produce intense X-ray laser beams, and a scheme to bounce laser beams off giant orbiting relay mirrors. Those far-out ideas remain science fiction. Meanwhile, in civilian sectors, the laser is already being successfully used in fiber optic cables, scanners, medical devices, and industrial cutting tools. Now those laser cutting tools are leading to a new generation of laser weapons that just might stop insurgent rockets. Replete with interesting characters, bizarre schemes, and wonderful inventions, this is a well-told tale about the evolution of technology and the reaches of human ambition.

Principles And Practice Of Laser Dentistry E Book

Author: Robert A. Convissar
Publisher: Elsevier Health Sciences
ISBN: 032307989X
Size: 49.94 MB
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Expand your skills in the rapidly growing field of laser dentistry! Principles and Practice of Laser Dentistry uses a concise, evidence-based approach in describing protocols and procedures. Dr. Robert A. Convissar, a renowned lecturer on this subject, has assembled a diverse panel of international contributors; he’s also one of the first general dentists to use lasers in his practice. The book covers the history of lasers in dentistry and laser research, plus the use of lasers in periodontics, periodontal surgery, oral pathology, implantology, fixed and removable prosthetics, cosmetic procedures, endodontics, operative dentistry, pediatrics, orthodontics, and oral and maxillofacial surgery. Full-color images show the latest laser technology, surgical techniques, and key steps in patient treatment. Full-color photos and illustrations demonstrate surgical techniques and key teaching points. A Laser Fundamentals chapter describes the physics of lasers and the wavelengths that can produce better outcomes. Introducing Lasers into the Dental Practice chapter provides guidelines on investing in laser technology and in marketing this new procedure. Clinical Tip and Caution boxes include advice and alerts that can only be offered by a seasoned practitioner of 27 years.

City Of Light

Author: Jeff Hecht
Publisher: Oxford University Press on Demand
ISBN: 9780195162554
Size: 41.99 MB
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Från baksidan: ¿7FThe basic concept underlying fiber optics was first explored in the 1840s when researchers used jets of water to guide light in laboratory demonstrations. The idea caught the public eye decades later when it was used to create stunning illuminated fountains at many of the great Victorian exibitions. The modern version of fiber optics - using flexible glass fibers to transmit light - was discovered independently five times throughout the first half of the century, and one of its first key applications was the endoscope, which for the first time allowed physicians to look inside the body without surgery. With the invention of the laser, researchers grew interested in optical communications. While Bell Labs and others tried to send laser beams through the athmosphere or hollow light pipes, a small group at Standard Telecommunication Laboratories looked at guiding light by transparent fibers. Led by Charles K. Kao, they proposed the idea of fiber-optic communications and demonstrated that, contrary to what many researchers thought, glass could be made clear enough to transmit light over great distances. Following these ideas, Corning Glass Works developed the first low-loss glass fibers in 1970."

Visions Of Tomorrow

Author: Thomas A. Easton
Publisher: Skyhorse Publishing Inc.
ISBN: 1602399980
Size: 39.28 MB
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Gathers science fiction stories that accurately predicted future developments, including "The Land Iron Clads" by H.G. Wells, which foresaw tank warfare in 1903, and a tale that so closely depicted the atomic bomb in 1944 it worried the FBI.

Laser Pioneers

Author: Jeff Hecht
Publisher:
ISBN:
Size: 24.14 MB
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Jeff Hecht details the intriguing story of laser-technology development throughory. The revised edition of Laser Pioneers describes a race for innovativee of thenatingers, process of invention.

How The Ray Gun Got Its Zap

Author: Stephen R. Wilk
Publisher: Oxford University Press
ISBN: 0199948011
Size: 44.15 MB
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A collection of engaging essays that discusses odd and unusual topics in optics

New Scientist

Author:
Publisher:
ISBN:
Size: 75.59 MB
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New Scientist magazine was launched in 1956 "for all those men and women who are interested in scientific discovery, and in its industrial, commercial and social consequences". The brand's mission is no different today - for its consumers, New Scientist reports, explores and interprets the results of human endeavour set in the context of society and culture.

Laser

Author: Nick Taylor
Publisher: Simon and Schuster
ISBN: 0743213211
Size: 55.28 MB
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In 1957 Gordon Gould, then an obscure physicist and perennial graduate student, conceived one of the revolutionary inventions of the twentieth century -- the laser. But before he could submit a patent application, a prominent professor of physics whose office was next door to Gould's filed his own laser patent claims. Gould fought to reclaim the rights to his work, beginning a battle that would last nearly thirty years. Many millions of dollars, as well as the integrity of scientific claims, were at stake in the litigation that ensued.Laseris Gould's story -- and an eye-opening look at the patent process in America, the nexus of the worlds of business and science. Gould was struggling to finish his Ph.D. thesis when he struck upon the concept for the laser, or Light Amplification by Stimulated Emission of Radiation. Light waves, Gould realized, would form a single concentrated beam when reflected between two mirrors inside a gas-filled chamber. Even as he was sketching his invention, Gould foresaw the tremendous potential of the laser in industry, communications, and the military. For three days he feverishly documented his ideas in a notebook, which he had notarized in a candy store near his Bronx apartment. A small technology firm took a great interest in Gould's laser and soon won a Defense Department contract to develop lasers for the military. Ironically, Gould was denied a security clearance because of his past communist associations, and so was unable to work on his own invention. He could only watch from the sidelines as colleagues tried to build a working laser in a desperate race with larger, better-funded research labs. Meanwhile, Gould's rival, Charles Townes, had everything that Gould lacked, most notably important academic and government appointments and esteem in the scientific community. In the dispute between the two men, few doubted Townes's word, while nearly everyone scoffed at Gould's claims. But Gould's determination was unyielding, and he fought everyone who stood in his way, including the U.S. Patent Office, major corporations, and the entire laser industry, until he finally won. Gordon Gould, the courts ruled, had invented the laser. Laseris a grand story of technology and law. Nick Taylor has extensively interviewed Gould as well as other key participants in the battle over the laser's invention and patents. In this riveting account of genius, rivalry, and greed, he shows just how difficult it is for the legendary lone inventor to prevail when the license to a valuable invention is at stake.