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Laser Turntable
A laser turntable (or optical turntable) is a phonograph that plays standard LP records (and other gramophone records) using laser beams as the Phonograph cartridge, pickup instead of using a Phonograph#Stylus, stylus as in conventional phonograph#Turntable technology, turntables. Although these turntables use Magnetic cartridge, laser pickups, the same as CD player, Compact Disc players, the signal remains in the Analog signal, analog realm and is never Digitization, digitized. History William K. Heine presented a paper "A Laser Scanning Phonograph Record Player" to the 57th Audio Engineering Society (AES) convention in May 1977. The paper details a method developed by Heine that employs a single 2.2 mW helium–neon laser for both tracking a record groove and reproducing the stereo audio of a phonograph in real time. In development since 1972, the working prototype was named the "LASERPHONE", and the methods it used for playback was awarded U.S. Patent 3,992,593 on 16 Nove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ELPJ
Edison Laser Player (ELP) Japan is a Japanese audio equipment company started by Sanju Chiba, who manufacture laser turntables. The origin of ELP's turntable came from an American company named Finial Technologies, led by Michael Stoddard, who designed a prototype unit for playing vinyl using laser technology in the mid-1980s. Unfortunately, this coincided with the commercial rise of the CD, so Finial went into receivership In law, receivership is a situation in which an institution or enterprise is held by a receiver – a person "placed in the custodial responsibility for the property of others, including tangible and intangible assets and rights" – especia ... and sold the rights to ELP in 1989. The units are custom built to order - a typical price in the mid-2000s was about $11,000 to $15,000. The turntable uses a combination of five lasers, which point in different directions of the groove in a vinyl record to ensure a steady signal is picked up. Because of laser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Graham Bell
Alexander Graham Bell (; born Alexander Bell; March 3, 1847 – August 2, 1922) was a Scottish-born Canadian Americans, Canadian-American inventor, scientist, and engineer who is credited with patenting the first practical telephone. He also co-founded the AT&T Corporation, American Telephone and Telegraph Company (AT&T) in 1885. Alexander Melville Bell, Bell's father, grandfather, and brother had all been associated with work on elocution and speech, and both his mother and wife were deaf, profoundly influencing Bell's life's work. His research on hearing and speech further led him to experiment with hearing devices, which eventually culminated in his being awarded the first United States patent law, U.S. patent for the telephone, on March 7, 1876. Bell considered his invention an intrusion on his real work as a scientist and refused to have a telephone in his study. Many other inventions marked Bell's later life, including ground-breaking work in Free-space optical commun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithsonian (magazine)
''Smithsonian'' is a magazine covering science, history, art, popular culture and innovation. The first issue was published in 1970. History The history of ''Smithsonian'' began when Edward K. Thompson, the retired editor of ''Life'' magazine, was asked by then-Secretary of the Smithsonian, S. Dillon Ripley, to produce a magazine "about things in which the Smithsonian nstitutionis interested, might be interested or ought to be interested." Thompson later recalled that his philosophy for the new magazine was that it "would stir curiosity in already receptive minds. It would deal with history as it is relevant to the present. It would present art, since true art is never dated, in the richest possible reproduction. It would peer into the future via coverage of social progress and of science and technology. Technical matters would be digested and made intelligible by skilled writers who would stimulate readers to reach upward while not turning them off with jargon. We would fin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEEE Spectrum
''IEEE Spectrum'' is a magazine edited and published by the Institute of Electrical and Electronics Engineers. The first issue of ''IEEE Spectrum'' was published in January 1964 as a successor to ''Electrical Engineering''. In 2010, ''IEEE Spectrum'' was the recipient of '' Utne Reader'' magazine's Utne Independent Press Award for Science/Technology Coverage. In 2012, ''IEEE Spectrum'' was selected as the winner of the National Magazine Awards "General Excellence Among Thought Leader Magazines" category. References External links * Monthly magazines published in the United States Science and technology magazines published in the United States Engineering magazines Spectrum A spectrum (: spectra or spectrums) is a set of related ideas, objects, or properties whose features overlap such that they blend to form a continuum. The word ''spectrum'' was first used scientifically in optics to describe the rainbow of co ... Magazines established in 1964 Magazines pub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Library Of Congress
The Library of Congress (LOC) is a research library in Washington, D.C., serving as the library and research service for the United States Congress and the ''de facto'' national library of the United States. It also administers Copyright law of the United States, copyright law through the United States Copyright Office, and it houses the Congressional Research Service. Founded in 1800, the Library of Congress is the oldest Cultural policy of the United States, federal cultural institution in the United States. It is housed in three buildings on Capitol Hill, adjacent to the United States Capitol, along with the National Audio-Visual Conservation Center in Culpeper, Virginia, and additional storage facilities at Fort Meade, Fort George G. Meade and Cabin Branch in Hyattsville, Maryland. The library's functions are overseen by the librarian of Congress, and its buildings are maintained by the architect of the Capitol. The LOC is one of the List of largest libraries, largest libra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lawrence Berkeley National Laboratory
Lawrence Berkeley National Laboratory (LBNL, Berkeley Lab) is a Federally funded research and development centers, federally funded research and development center in the Berkeley Hills, hills of Berkeley, California, United States. Established in 1931 by the University of California (UC), the laboratory is sponsored by the United States Department of Energy and administered by the UC system. Ernest Lawrence, who won the Nobel prize for inventing the cyclotron, founded the lab and served as its director until his death in 1958. Located in the Berkeley Hills, the lab overlooks the campus of the University of California, Berkeley. Scientific research The mission of Berkeley Lab is to bring science solutions to the world. The research at Berkeley Lab has four main themes: discovery science, energy, earth systems, and the future of science. The Laboratory's 22 scientific divisions are organized within six areas of research: Computing Sciences, Physical Sciences, Earth and Environmenta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IRENE (technology)
IRENE (''Image, Reconstruct, Erase Noise, Etc.'') is a digital imaging technology designed to recover analog audio stored on fragile or deteriorating phonograph cylinders, records, and other grooved audio media. It is in use by several archives and preservation institutions in the United States seeking to preserve and digitize historical audio. History The technology was developed at Lawrence Berkeley National Laboratory by Carl Haber and Vitaliy Fadeyev and was announced in a publication of the '' Journal of the Audio Engineering Society'' in 2003.Vitaliy Fadeyev and Carl Haber, ''Reconstruction of Mechanically Recorded Sound by Image Processing''. ''Journal of the Audio Engineering Society'', 2003.PDF It grew out of Haber's research in particle physics; in the 1990s, he had worked on Higgs boson detection experiments, and realized that the cameras he was using to set the detectors could also be used for detailed imaging of grooved audio recordings. The name IRENE is a bac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stereophile
''Stereophile'' is a monthly American audiophile magazine which reviews high-end audio equipment, such as loudspeakers and amplifiers, and audio-related news. History ''Stereophile'' was founded in 1962 by J. Gordon Holt. With the August 1987 issue, it started monthly publication. In 1998, ''Stereophile'' was acquired by the Petersen Publishing Company. At this point, it was based in Santa Fe, New Mexico. During this period, it was published eight times a year. Petersen, which was acquired by Emap Ascential (formerly EMAP) was a British-headquartered global company, specialising in events, intelligence and advisory services for the marketing and financial technology industries. It was listed on the London Stock Exchange until it was ac ..., was then sold to Primedia Inc. in 2001. Primedia sold its Enthusiast Network, a New York–based publisher of special interest magazines, to Source Interlink Media, in 2007. In March 2018, ''Stereophile'' was purchased, along ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dust
Dust is made of particle size, fine particles of solid matter. On Earth, it generally consists of particles in the atmosphere that come from various sources such as soil lifted by wind (an aeolian processes, aeolian process), Types of volcanic eruptions, volcanic eruptions, and pollution. Dust in homes is composed of about 20–50% dead skin Cell (biology), cells. The rest, and in offices and other built environments, is composed of small amounts of plant pollen, human hairs, animal fur, textile fibers, paper fibers, minerals from outdoor soil, burnt meteorite particles, and many other materials which may be found in the local environment. Atmospheric Atmospheric or wind-borne fugitive dust, also known as ''aeolian dust'', comes from dry regions where high-speed winds can remove mostly silt-sized material, abrading susceptible surfaces. This includes areas where grazing, ploughing, vehicle use, and other human behaviors have further destabilized the land, though not all so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mass
Mass is an Intrinsic and extrinsic properties, intrinsic property of a physical body, body. It was traditionally believed to be related to the physical quantity, quantity of matter in a body, until the discovery of the atom and particle physics. It was found that different atoms and different elementary particle, elementary particles, theoretically with the same amount of matter, have nonetheless different masses. Mass in modern physics has multiple Mass in special relativity, definitions which are conceptually distinct, but physically equivalent. Mass can be experimentally defined as a measure (mathematics), measure of the body's inertia, meaning the resistance to acceleration (change of velocity) when a net force is applied. The object's mass also determines the Force, strength of its gravitational attraction to other bodies. The SI base unit of mass is the kilogram (kg). In physics, mass is Mass versus weight, not the same as weight, even though mass is often determined by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
