Photography is the art, application, and practice of creating images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film. It is employed in many fields of science, manufacturing, and business, as well as its more direct uses for art, film and video production, recreational purposes, hobby, and mass communication.
The Mona Lisa is a half-length portrait painting by Italian artist Leonardo da Vinci. Considered an archetypal masterpiece of the Italian Renaissance, it has been described as "the best known, the most visited, the most written about, the most sung about, [and] the most parodied work of art in the world". The painting's novel qualities include the subject's enigmatic expression, monumentality of the composition, the subtle modelling of forms, and the atmospheric illusionism.
An image is a visual representation. An image can be two-dimensional, such as a drawing, painting, or photograph, or three-dimensional, such as a carving or sculpture. Images may be displayed through other media, including projection on a surface, activation of electronic signals, or digital displays; they can also be reproduced through mechanical means, such as photography, printmaking or photocopying. Images can also be animated through digital or physical processes.
In photography, a negative is an image, usually on a strip or sheet of transparent plastic film, in which the lightest areas of the photographed subject appear darkest and the darkest areas appear lightest. This reversed order occurs because the extremely light-sensitive chemicals a camera film must use to capture an image quickly enough for ordinary picture-taking are darkened, rather than bleached, by exposure to light and subsequent photographic processing.
Julian Beever is a British sidewalk chalk artist who has been creating trompe-l'œil chalk drawings on pavement surfaces since the mid-1990s. He uses a projection technique called anamorphosis to create the illusion of three dimensions when viewed from the correct angle. He preserves his work in photographs, often positioning a person within the image as if they were interacting with the scene.
Lillian F. Schwartz is an American artist considered a pioneer of computer-mediated art and one of the first artists notable for basing almost her entire oeuvre on computational media. Many of her ground-breaking projects were done in the 1960s and 1970s, well before the desktop computer revolution made computer hardware and software widely available to artists.
Leonardo da Vinci was an Italian Renaissance painter and polymath who achieved legendary fame and iconic status within his own lifetime. His renown primarily rests upon his brilliant achievements as a painter, the Mona Lisa and The Last Supper, being two of the most famous artworks ever created, but also upon his diverse skills as a scientist and inventor. He became so highly valued during his lifetime that the King of France bore him home like a trophy of war, supported him in his old age and, according to legend, cradled his head as he died.
The Isleworth Mona Lisa is an early 16th-century oil on canvas painting depicting the same subject as Leonardo da Vinci's Mona Lisa, though with the subject depicted as being a younger age. The painting is thought to have been brought from Italy to England in the 1780s, and came into public view in 1913 when the English connoisseur Hugh Blaker acquired it from a manor house in Somerset, where it was thought to have been hanging for over a century. The painting would eventually adopt its unofficial name of Isleworth Mona Lisa from Blaker's studio being in Isleworth, West London. Since the 1910s, experts in various fields, as well as the collectors who have acquired ownership of the painting, have asserted that the major elements of the painting are the work of Leonardo himself, as an earlier version of the Mona Lisa.
Plasma speakers or ionophones are a form of loudspeaker which varies air pressure via an electrical plasma instead of a solid diaphragm. The plasma arc heats the surrounding air causing it to expand. Varying the electrical signal that drives the plasma and connected to the output of an audio amplifier, the plasma size varies which in turn varies the expansion of the surrounding air creating sound waves.
L.H.O.O.Q. is a work of art by Marcel Duchamp. First conceived in 1919, the work is one of what Duchamp referred to as readymades, or more specifically a rectified ready-made. The readymade involves taking mundane, often utilitarian objects not generally considered to be art and transforming them, by adding to them, changing them, or simply renaming and reorienting them and placing them in an appropriate setting. In L.H.O.O.Q. the found object is a cheap postcard reproduction of Leonardo da Vinci's early 16th-century painting Mona Lisa onto which Duchamp drew a moustache and beard in pencil and appended the title.
The 16th-century portrait Mona Lisa, or La Gioconda, painted in oil on a poplar panel by Leonardo da Vinci, has been the subject of a considerable deal of speculation.
The Lunar Reconnaissance Orbiter (LRO) is a NASA robotic spacecraft currently orbiting the Moon in an eccentric polar mapping orbit. Data collected by LRO have been described as essential for planning NASA's future human and robotic missions to the Moon. Its detailed mapping program is identifying safe landing sites, locating potential resources on the Moon, characterizing the radiation environment, and demonstrating new technologies.
The acknowledgement of Lego in popular culture is demonstrated by the toy's wide representation in publication, television and film, and its common usage in artistic and cultural works.
Thermochemical nanolithography (TCNL) or thermochemical scanning probe lithography (tc-SPL) is a scanning probe microscopy-based nanolithography technique which triggers thermally activated chemical reactions to change the chemical functionality or the phase of surfaces. Chemical changes can be written very quickly through rapid probe scanning, since no mass is transferred from the tip to the surface, and writing speed is limited only by the heat transfer rate. TCNL was invented in 2007 by a group at the Georgia Institute of Technology. Riedo and collaborators demonstrated that TCNL can produce local chemical changes with feature sizes down to 12 nm at scan speeds up to 1 mm/s.
Leonardo da Vinci's Mona Lisa is one of the most recognizable and famous works of art in the world, and also one of the most replicated and reinterpreted. Mona Lisa replicas were already being painted during Leonardo's lifetime by his own students and contemporaries. Some are claimed to be the work of Leonardo himself, and remain disputed by scholars. Prominent 20th-century artists such as Marcel Duchamp and Salvador Dalí have also produced derivative works, manipulating Mona Lisa's image to suit their own aesthetic. Replicating Renaissance masterpieces continues to be a way for aspiring artists to perfect their painting techniques and prove their skills.
John Fredrich Asmus is a research physicist who has focused his work on the use of scientific techniques in art conservation. As of 2020, he taught at the Institute for Pure and Applied Physical Science at the University of California, San Diego, where he began working in 1974.
Abstract photography, sometimes called non-objective, experimental or conceptual photography, is a means of depicting a visual image that does not have an immediate association with the object world and that has been created through the use of photographic equipment, processes or materials. An abstract photograph may isolate a fragment of a natural scene to remove its inherent context from the viewer, it may be purposely staged to create a seemingly unreal appearance from real objects, or it may involve the use of color, light, shadow, texture, shape and/or form to convey a feeling, sensation or impression. The image may be produced using traditional photographic equipment like a camera, darkroom or computer, or it may be created without using a camera by directly manipulating film, paper or other photographic media, including digital presentations.
The Prado Mona Lisa is a painting by the workshop of Leonardo da Vinci and depicts the same subject and composition as Leonardo's better known Mona Lisa at the Louvre, Paris. The Prado Mona Lisa has been in the collection of the Museo del Prado in Madrid, Spain since 1819, but was considered for decades a relatively unimportant copy. Following its restoration in 2012, however, the Prado's Mona Lisa has come to be understood as the earliest known studio copy of Leonardo's masterpiece.
George Pusenkoff, Belarus, is a German-Jewish painter, installation artist and photographer. He is a representative of postmodernism.
