0_Wizard
I'm just learning photography. It records light with electromagnetic radiation.
Photography is the science, art, application and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.
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Photography
chosen_topic_0_Photography
Electromagnetic radiation
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-rays, and gamma rays." Classically, electromagnetic radiation consists of electromagnetic waves, which are synchronized oscillations of electric and magnetic fields that propagate at the speed of light through a vacuum. The oscillations of the two fields are perpendicular to each other and perpendicular to the direction of energy and wave propagation, forming a transverse wave.
Radiation
In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. This includes:  Radiation is often categorized as either ionizing or non-ionizing depending on the energy of the radiated particles. Ionizing radiation carries more than 10 eV, which is enough to ionize atoms and molecules, and break chemical bonds. This is an important distinction due to the large difference in harmfulness to living organisms. A common source of ionizing radiation is radioactive materials that emit α, β, or γ radiation, consisting of helium nuclei, electrons or positrons, and photons, respectively.
Electromagnetic spectrum
The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies. The electromagnetic spectrum covers electromagnetic waves with frequencies ranging from below one hertz to above 10 hertz, corresponding to wavelengths from thousands of kilometers down to a fraction of the size of an atomic nucleus. This frequency range is divided into separate bands, and the electromagnetic waves within each frequency band are called by different names; beginning at the low frequency (long wavelength) end of the spectrum these are: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays at the high-frequency (short wavelength) end.
Photon
A photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force (even when static via virtual particles). The photon has zero rest mass and always moves at the speed of light within a vacuum. Depending on the size of the electromagnetic field that it emits, the photon will take on different properties. Like all elementary particles, photons are currently best explained by quantum mechanics and exhibit wave–particle duality, exhibiting properties of both waves and particles.
Planck's law
Planck's law describes the spectral density of electromagnetic radiation emitted by a black body in thermal equilibrium at a given temperature "T". The law is named after Max Planck, who proposed it in 1900. It is a pioneering result of modern physics and quantum theory. The spectral radiance of a body, , describes the amount of energy it gives off as radiation of different frequencies. It is measured in terms of the power emitted per unit area of the body, per unit solid angle that the radiation is measured over, per unit frequency. Planck showed that the spectral radiance of a body for frequency at absolute temperature is given by  where is the Boltzmann constant, is the Planck constant, and is the speed of light in the medium, whether material or vacuum.
Non-ionizing radiation
Non-ionizing (or non-ionising) radiation refers to any type of electromagnetic radiation that does not carry enough energy per quantum (photon energy) to ionize atoms or molecules—that is, to completely remove an electron from an atom or molecule. Instead of producing charged ions when passing through matter, the electromagnetic radiation has sufficient energy only for excitation, the movement of an electron to a higher energy state. "Ionizing radiation" which has a higher frequency and shorter wavelength than nonionizing radiation, has many uses but can be a health hazard; exposure to it can cause burns, radiation sickness, cancer, and genetic damage.
Gamma ray
Gamma rays (also called gamma radiation), denoted by the lower-case Greek letter gamma (γ or formula_1 ), are penetrating electromagnetic radiation of a kind arising from the radioactive decay of atomic nuclei. It consists of photons in the highest observed range of photon energy. Paul Villard, a French chemist and physicist, discovered gamma radiation in 1900 while studying radiation emitted by radium. In 1903, Ernest Rutherford named this radiation "gamma rays". Rutherford had previously discovered two other types of radioactive decay, which he named alpha rays and beta rays. The decay of an atomic nucleus from a high energy state to a lower energy state, a process called "gamma decay", produces gamma radiation.
1_Apprentice
That is instrusting can you tell me more about.
0_Wizard
Well the camera uses a lens to focus and then a light is reflected into a real image.
Typically, a lens is used to focus the light reflected or emitted from objects into a real image on the light-sensitive surface inside a camera during a timed exposure.
chosen_Photography_0
Photography
chosen_topic_0_Photography
Lens (optics)
A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses ("elements"), usually arranged along a common axis. Lenses are made from materials such as glass or plastic, and are ground and polished or molded to a desired shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light are also called lenses, such as microwave lenses, electron lenses, acoustic lenses, or explosive lenses.
Optical microscope
The optical microscope, often referred to as light microscope, is a type of microscope which uses visible light and a system of lenses to magnify images of small samples. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century. Basic optical microscopes can be very simple, although there are many complex designs which aim to improve resolution and sample contrast. The image from an optical microscope can be captured by normal light-sensitive cameras to generate a micrograph. Originally images were captured by photographic film but modern developments in CMOS and charge-coupled device (CCD) cameras allow the capture of digital images.
Camera
A camera is an optical instrument for recording or capturing images, which may be stored locally, transmitted to another location, or both. The images may be individual still photographs or sequences of images constituting videos or movies. The camera is a remote sensing device as it senses subjects without any contact  . The word "camera" comes from "camera obscura", which means "dark chamber" and is the Latin name of the original device for projecting an image of external reality onto a flat surface. The modern photographic camera evolved from the camera obscura. The functioning of the camera is very similar to the functioning of the human eye.
Depth of field
In optics, particularly as it relates to film and photography, depth of field (DOF), also called "focus range" or "effective focus range", is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image. Although a lens can precisely focus at only one distance at a time, the decrease in sharpness is gradual on each side of the focused distance, so that within the DOF, the unsharpness is imperceptible under normal viewing conditions. In some cases, it may be desirable to have the entire image sharp, and a large DOF is appropriate. In other cases, a small DOF may be more effective, emphasizing the subject while de-emphasizing the foreground and background.
History of photographic lens design
The invention of the camera in the early 19th century led to an array of lens designs intended for photography. The problems of photographic lens design, creating a lens for a task that would cover a large, flat image plane, were well known even before the invention of photography due to the development of lenses to work with the focal plane of the camera obscura. The early photographic experiments of Thomas Wedgwood, Nicéphore Niépce, Henry Fox Talbot, and Louis Daguerre all used simple single-element convex lenses. These lenses were found lacking. Simple lenses could not focus an image over a large flat film plane (Field curvature) and suffered from other optical aberrations.
Photography
Photography is the science, art, application and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film. Typically, a lens is used to focus the light reflected or emitted from objects into a real image on the light-sensitive surface inside a camera during a timed exposure. With an electronic image sensor, this produces an electrical charge at each pixel, which is electronically processed and stored in a digital image file for subsequent display or processing.
Autofocus
An autofocus (or AF) optical system uses a sensor, a control system and a motor to focus on an automatically or manually selected point or area. An electronic rangefinder has a display instead of the motor; the adjustment of the optical system has to be done manually until indication. Autofocus methods are distinguished by their type as being either active, passive or hybrid variants. Autofocus systems rely on one or more sensors to determine correct focus. Some AF systems rely on a single sensor, while others use an array of sensors. Most modern SLR cameras use through-the-lens optical AF sensors, with a separate sensor array providing light metering, although the latter can be programmed to prioritize its metering to the same area as one or more of the AF sensors.
1_Apprentice
It is mind blowing how the can do all that and still fit in our cell phone.
0_Wizard
Yes or a camera which means "dark chamber" in Latin.
The word "camera" comes from "camera obscura", which means "dark chamber" and is the Latin name of the original device for projecting an image of external reality onto a flat surface.
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Camera
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Camera obscura
Camera obscura (plural "camera obscura" or "camera obscuras"; from Latin, meaning "dark room": "camera" "(vaulted) chamber or room," and "obscura" "darkened, dark"), also referred to as pinhole image, is the natural optical phenomenon that occurs when an image of a scene at the other side of a screen (or for instance a wall) is projected through a small hole in that screen as a reversed and inverted image (left to right and upside down) on a surface opposite to the opening. The surroundings of the projected image have to be relatively dark for the image to be clear, so many historical camera obscura experiments were performed in dark rooms.
Camera
A camera is an optical instrument for recording or capturing images, which may be stored locally, transmitted to another location, or both. The images may be individual still photographs or sequences of images constituting videos or movies. The camera is a remote sensing device as it senses subjects without any contact  . The word "camera" comes from "camera obscura", which means "dark chamber" and is the Latin name of the original device for projecting an image of external reality onto a flat surface. The modern photographic camera evolved from the camera obscura. The functioning of the camera is very similar to the functioning of the human eye.
The Dark Chamber
The Dark Chamber is a 1927 horror novel by Leonard Cline. The novel concerns Oscar Fitzalan and his interactions with Richard Pride who, trying to remember his past life, goes beyond his own memory and sinks into the gulfs of "primal memory." The narrator, Oscar Fitzalan, a composer, is hired by Richard Pride to assist him at his estate and study at Mordance Hall. Here, he meets Hough, Pride's secretary; Miriam, Pride's wife; the Pride's daughter Janet; and their dog Tod, a German hound. They are later joined by Ramón Del Prado, one of Pride's employees. Also in the household are two black servants, old Mamie and her fourteen-year-old daughter Sally.
Daguerreotype
Invented by Louis-Jacques-Mandé Daguerre and introduced worldwide in 1839, daguerreotype was almost completely superseded by 1860 with new, less expensive processes yielding more readily viewable images. During the past few decades, there has been a small revival of daguerreotypy among photographers interested in making artistic use of early photographic processes. To make the image, a daguerreotypist would polish a sheet of silver-plated copper to a mirror finish, treat it with fumes that made its surface light sensitive, expose it in a camera for as long as was judged to be necessary, which could be as little as a few seconds for brightly sunlit subjects or much longer with less intense lighting; make the resulting latent image on it visible by fuming it with mercury vapor; remove its sensitivity to light by liquid chemical treatment, rinse and dry it, then seal the easily marred result behind glass in a protective enclosure.
Photography
Photography is the science, art, application and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film. Typically, a lens is used to focus the light reflected or emitted from objects into a real image on the light-sensitive surface inside a camera during a timed exposure. With an electronic image sensor, this produces an electrical charge at each pixel, which is electronically processed and stored in a digital image file for subsequent display or processing.
Tainter Cave
Tainter Cave, also known as "Tombstone Cave", is a dry sandstone cave in Crawford County, Wisconsin, in which prehistoric Native Americans carved petroglyphs and drew pictographs, including birds, men, deer, and abstract designs. With over 100 pictographs, the cave holds more than any other known site in Wisconsin. It is also notable as the first archaeological site recorded in the dark zone of a cave in the Upper Midwest. The cave is in a layer of St. Peter Sandstone near the top of a ridge in the Driftless Area. From the entrance on the east-facing side of the ridge, it penetrates over 175 feet to the southwest.
Camera lucida
A camera lucida is an optical device used as a drawing aid by artists. The "camera lucida" performs an optical superimposition of the subject being viewed upon the surface upon which the artist is drawing. The artist sees both scene and drawing surface simultaneously, as in a photographic double exposure. This allows the artist to duplicate key points of the scene on the drawing surface, thus aiding in the accurate rendering of perspective. The "camera lucida" was patented in 1806 by William Hyde Wollaston. The basic optics were described 200 years earlier by Johannes Kepler in his Dioptrice (1611), but there is no evidence he or his contemporaries constructed a working camera lucida.
1_Apprentice
What is your favorite thing that you like to take pictures of?
0_Wizard
I like to take individual still photographs of flowers.
The images may be individual still photographs or sequences of images constituting videos or movies.
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Camera
self_1_Camera
Camera
A camera is an optical instrument for recording or capturing images, which may be stored locally, transmitted to another location, or both. The images may be individual still photographs or sequences of images constituting videos or movies. The camera is a remote sensing device as it senses subjects without any contact  . The word "camera" comes from "camera obscura", which means "dark chamber" and is the Latin name of the original device for projecting an image of external reality onto a flat surface. The modern photographic camera evolved from the camera obscura. The functioning of the camera is very similar to the functioning of the human eye.
LaserDisc
LaserDisc (abbreviated as LD) is a home video format and the first commercial optical disc storage medium, initially licensed, sold and marketed as MCA DiscoVision in North America in 1978. Although the format was capable of offering higher-quality video and audio than its consumer rivals, VHS and Betamax videotape, LaserDisc never managed to gain widespread use in North America, largely due to high costs for the players and video titles themselves and the inability to record TV programs. It was not a popular format in Europe and Australia when first released, but eventually did gain traction in these regions to become popular in the 1990s.
Doug and Mary Lou Nemanic
Doug and Mary Lou Nemanic are an American husband-and-wife team of documentary photographers, journalists and filmmakers who by 2015 have been working together for more than 30 years utilizing mass media methods to record and preserve everyday life. Together they form the independent production company Documentary America. Doug is a Guggenheim fellow. in filmmaking has worked in television news and documentary and whose award-winning films have been seen on CBS, NBC, ABC, and PBS. Mary Lou has a Ph.D. in American Studies, is an Associate Professor at Penn State University, and is the author of "One Day For Democracy: Independence Day and the Americanization of Iron Range Immigrants", (2007, Ohio University Press).
Lookout Mountain Air Force Station
Lookout Mountain Air Force Station (LMAFS) is a former defense site which today is a private residence in the Laurel Canyon neighborhood of Los Angeles, California. The USAF military installation produced motion pictures and still photographs for the United States Department of Defense and the Atomic Energy Commission (AEC) from 1947–1969. The 100,000 sq ft (9,300m) facility was built on 2.5 acres in 1941 as a World War II air defense center to coordinate Los Angeles area radar installations. When the studio was established in 1947, its purpose was kept secret. The studio consisted of one large sound stage, a film laboratory, two screening rooms, four editing rooms, an animation and still photo department, sound mixing studio, and numerous climate controlled film vaults.
Janis Joplin
Janis Lyn Joplin (; January 19, 1943 – October 4, 1970) was an American rock singer and songwriter. She was one of the biggest female rock stars of her era. After releasing three albums, she died of a heroin overdose at the age of 27. A fourth album, "Pearl", was released in January 1971, just over three months after her death. It reached number one on the "Billboard" charts. In 1967, Joplin rose to fame during an appearance at Monterey Pop Festival, where she was the lead singer of the then little-known San Francisco psychedelic rock band Big Brother and the Holding Company. After releasing two albums with the band, she left Big Brother to continue as a solo artist with her own backing groups, first the Kozmic Blues Band and then the Full Tilt Boogie Band.
Ken Burns effect
The Ken Burns effect is a type of panning and zooming effect used in video production from still imagery. The name derives from extensive use of the technique by American documentarian Ken Burns. The technique predates his use of it, but his name has become associated with the effect in much the same way as Alfred Hitchcock is associated with the dolly zoom. The feature enables a widely used technique of embedding still photographs in motion pictures, displayed with slow zooming and panning effects, and fading transitions between frames. The technique is principally used when film or video material is not available.
State University of New York at Purchase
State University of New York at Purchase also known as Purchase College is a public four-year college located in Purchase, New York, United States. It is one of 13 comprehensive colleges in the State University of New York (SUNY) system. Founded by Governor Nelson Rockefeller in 1967 as "the cultural gem of the SUNY system", Purchase College claims to offer "a unique education that combines programs in the liberal arts with conservatory programs in the arts in ways that emphasize inquiry, mastery of skills, and creativity." Purchase College was ranked 9 in U.S. News & World Report's 2016 listing of top public liberal arts colleges.
1_Apprentice
Do you use any kinds of filter or techniques while taking taking your pictures.