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Vectograph
A vectograph is a type of stereoscopic print or transparency viewed by using the polarized 3D glasses most commonly associated with projected 3D motion pictures. Credit for the concept of the vectograph is due to Joseph Mahler, cousin of composer and conductor Gustav Mahler. He immigrated to the US from Czechoslovakia in 1938 and was hired by the Polaroid Corporation, where he worked with its founder Edwin Land, to develop his idea into a practical process. An elementary vectograph is a polarizing filter sheet that encodes a photographic image as areas that polarize light more or less strongly, corresponding to the darker and lighter areas of the image. When the sheet is viewed by itself in ordinary light, a pale image becomes visible. When viewed through a uniformly polarizing filter sheet oriented in the same plane of polarization, the image is almost completely invisible. If either sheet is rotated 90 degrees about its axis, so that their planes of polarization are at right ang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stereoscopic
Stereoscopy (also called stereoscopics, or stereo imaging) is a technique for creating or enhancing the illusion of depth in an image by means of stereopsis for binocular vision. The word ''stereoscopy'' derives . Any stereoscopic image is called a stereogram. Originally, stereogram referred to a pair of stereo images which could be viewed using a stereoscope. Most stereoscopic methods present a pair of two-dimensional images to the viewer. The left image is presented to the left eye and the right image is presented to the right eye. When viewed, the human brain perceives the images as a single 3D view, giving the viewer the perception of 3D depth. However, the 3D effect lacks proper focal depth, which gives rise to the Vergence-Accommodation Conflict. Stereoscopy is distinguished from other types of 3D displays that display an image in three full dimensions, allowing the observer to increase information about the 3-dimensional objects being displayed by head and eye mov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polarized 3D Glasses
A polarized 3D system uses polarization glasses to create the illusion of three-dimensional images by restricting the light that reaches each eye (an example of stereoscopy). To present stereoscopic images and films, two images are projected superimposed onto the same screen or display through different polarizing filters. The viewer wears low-cost eyeglasses with a polarizing filter for each eye. The left and right filters have different polarizations, so each eye receives only the image with the matching polarization. This is used to produce a three-dimensional effect by projecting the same scene into both eyes, but depicted from slightly different perspectives with different polarizations. Multiple people can view the stereoscopic images at the same time. Polarized 3D systems, and stereoscopy systems in general, commonly exhibit the Vergence-Accommodation Conflict. Types of polarised glasses Linearly polarised glasses To present a stereoscopic motion picture, two ima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edwin Land
Edwin Herbert Land, ForMemRS, FRPS, Hon.MRI (May 7, 1909 – March 1, 1991) was an Russian-American scientist and inventor, best known as the co-founder of the Polaroid Corporation. He invented inexpensive filters for polarizing light, a practical system of in-camera instant photography, and the retinex theory of color vision, among other things. His Polaroid instant camera went on sale in late 1948 and made it possible for a picture to be taken and developed in 60 seconds or less. Life and career Edwin Land was born to Jewish parents in Bridgeport, Connecticut, to Matie () and Harry Land, a Russian scrap-metal dealer. Growing up, he was known to take apart household appliances, such as a mantel clock and the family's new gramophone, as well as blowing all the house's fuses when he was six years old. He was scolded by his father when taking apart a phonograph and he vowed that "nothing or nobody could stop me from carrying through the execution of an experiment" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anaglyph Image
Anaglyph 3D is the stereoscopic 3D effect achieved by means of encoding each eye's image using filters of different (usually chromatically opposite) colors, typically red and cyan. Anaglyph 3D images contain two differently filtered colored images, one for each eye. When viewed through the "color-coded" "anaglyph glasses", each of the two images reaches the eye it's intended for, revealing an integrated stereoscopic image. The visual cortex of the brain fuses this into the perception of a three-dimensional scene or composition. Anaglyph images have seen a recent resurgence due to the presentation of images and video on the Web, Blu-ray Discs, CDs, and even in print. Low cost paper frames or plastic-framed glasses hold accurate color filters that typically, after 2002, make use of all 3 primary colors. The current norm is red and cyan, with red being used for the left channel. The cheaper filter material used in the monochromatic past dictated red and blue for convenience a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustav Mahler
Gustav Mahler (; 7 July 1860 – 18 May 1911) was an Austro-Bohemian Romantic composer, and one of the leading conductors of his generation. As a composer he acted as a bridge between the 19th-century Austro-German tradition and the modernism of the early 20th century. While in his lifetime his status as a conductor was established beyond question, his own music gained wide popularity only after periods of relative neglect, which included a ban on its performance in much of Europe during the Nazi era. After 1945 his compositions were rediscovered by a new generation of listeners; Mahler then became one of the most frequently performed and recorded of all composers, a position he has sustained into the 21st century. Born in Kingdom of Bohemia, Bohemia (then part of the Austrian Empire) to Ashkenazi Jews, Jewish parents of humble origins, the German-speaking Mahler displayed his musical gifts at an early age. After graduating from the University of Music and Performing Arts, Vien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polaroid Corporation
Polaroid is an American company best known for its instant film and cameras. The company was founded in 1937 by Edwin H. Land, to exploit the use of its Polaroid polarizing polymer. Land ran the company until 1981. Its peak employment was 21,000 in 1978, and its peak revenue was $3 billion in 1991. When the original Polaroid Corporation was declared bankrupt in 2001, its brand and assets were sold off. The "new" Polaroid formed as a result, itself declared bankruptcy in 2008, resulting in a further sale to Polish billionaire Wiaczesław Smołokowski. In May 2017, the brand and intellectual property of Polaroid Corporation were acquired by the largest shareholder of the Impossible Project, which had originally started out in 2008 by producing new instant films for Polaroid cameras. The Impossible Project was renamed Polaroid Originals in September 2017, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Lefer
David G. Lefer is an American professor, journalist and author, who holds the post of Industry Professor at New York University's Polytechnic Institute, where he directs the Innovation and Technology Forum. A 1994 honors graduate of Harvard College, Lefer obtained a master's degree in 1995 from Columbia University's School of Journalism. He worked as a journalist for the ''New York Daily News'', ''Newsday'', the ''Pittsburgh Post-Gazette'', and ''The China News'' in Taiwan. He was also a co-producer of the PBS talk show The Digital Age. Lefer co-wrote the book ''They Made America'' (Little, Brown 2004), with Harold Evans Sir Harold Matthew Evans (28 June 192823 September 2020) was a British-American journalist and writer. In his career in his native Britain, he was editor of ''The Sunday Times'' from 1967 to 1981, and its sister title ''The Times'' for a year f ... and Gail Buckland. This history of American innovation was subsequently made into a four-part PBS series, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rowland Institute
The Rowland Institute for Science was founded by Edwin H. Land, founder of Polaroid Corporation, as a nonprofit, privately endowed basic research organization in 1980. The institute merged with Harvard University on July 1, 2002, and is now called The Rowland Institute at Harvard. The Rowland Institute is dedicated to experimental science across a wide range of disciplines. Research subjects at the institute includes chemistry, physics and biology, and focus on interdisciplinary work and the development of new experimental tools. It is located on the Charles River near Kendall Square in Cambridge, Massachusetts, and is a few miles away from the main campus of Harvard. Rowland Fellows The flagship program at the Rowland Institute is the Fellows Program. The program supports early career experimental scientists. Rowland Fellows receive funding for salary and research expenses and are allocated their own laboratory space. The Rowland Institute also provides technical support from perma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard University
Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher learning in the United States and one of the most prestigious and highly ranked universities in the world. The university is composed of ten academic faculties plus Harvard Radcliffe Institute. The Faculty of Arts and Sciences offers study in a wide range of undergraduate and graduate academic disciplines, and other faculties offer only graduate degrees, including professional degrees. Harvard has three main campuses: the Cambridge campus centered on Harvard Yard; an adjoining campus immediately across Charles River in the Allston neighborhood of Boston; and the medical campus in Boston's Longwood Medical Area. Harvard's endowment is valued at $50.9 billion, making it the wealthiest academic institution in the world. Endo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optometrist
Optometry is a specialized health care profession that involves examining the eyes and related structures for defects or abnormalities. Optometrists are health care professionals who typically provide comprehensive primary eye care. In the United States and Canada, optometrists are those that hold a Doctor of Optometry degree. They are trained and licensed to practice medicine for eye related conditions, in addition to providing refractive (optical) eye care. In the United Kingdom, optometrists may also practice medicine (and provide refractive care) for eye related conditions. The Doctor of Optometry title can also be used in the UK for those that hold the postgraduate O.D. degree. Within their scope of practice, optometrists are considered physicians and bill medical insurance(s) (example: Medicare) accordingly. Moreover, many participate in academic research for eye related conditions and disease. Optometrists are the only health care professionals with a first professional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophthalmology
Ophthalmology ( ) is a surgical subspecialty within medicine that deals with the diagnosis and treatment of eye disorders. An ophthalmologist is a physician who undergoes subspecialty training in medical and surgical eye care. Following a medical degree, a doctor specialising in ophthalmology must pursue additional postgraduate residency training specific to that field. This may include a one-year integrated internship that involves more general medical training in other fields such as internal medicine or general surgery. Following residency, additional specialty training (or fellowship) may be sought in a particular aspect of eye pathology. Ophthalmologists prescribe medications to treat eye diseases, implement laser therapy, and perform surgery when needed. Ophthalmologists provide both primary and specialty eye care - medical and surgical. Most ophthalmologists participate in academic research on eye diseases at some point in their training and many include research as p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quoits
Quoits ( or ) is a traditional game which involves the throwing of metal, rope or rubber rings over a set distance, usually to land over or near a spike (sometimes called a hob, mott or pin). The game of quoits encompasses several distinct variations. History From coyte: ‘flat stone thrown in a game’. Probably from Old French coite - ‘flat stone’. Possible derivation of coilte - ‘cushion’. It is not until the 19th century that the game is documented in any detailed way. The official rules first appeared in the April 1881 edition of '' The Field'', having been defined by a body formed from pubs in Northern England.Quoits Online A July 13, 1836 advertisement in the '' National Intelligencer'' (Washington, D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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