Camera
hideA camera is a device that records images, either as a still photograph or as moving images known as videos or movies. The term comes from the camera obscura (Latin for "dark chamber"), an early mechanism of projecting images where an entire room functioned as a real-time imaging system; the modern camera evolved from the camera obscura.
Cameras may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum. A camera generally consists of an enclosed hollow with an opening (aperture) at one end for light to enter, and a recording or viewing surface for capturing the light at the other end. A majority of cameras have a lens positioned in front of the camera's opening to gather the incoming light and focus all or part of the image on the recording surface. The diameter of the aperture is often controlled by a diaphragm mechanism, but some cameras have a fixed-size aperture.
A typical still camera takes one photo each time the user presses the shutter button. A typical movie camera continuously takes 24 film frames per second as long as the user holds down the shutter button.
For more information about Camera, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with camera
Tulane University surgeon pioneers 'scarless' thyroid surgery
Nov 24, 2009 |
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Tulane University School of Medicine surgeon Dr. Emad Kandil is one of the first in the country to perform a new form of endoscopic surgery that uses a small incision under the arm to remove all or a portion of the thyroid ...
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New Nokia 6700 slide and Nokia 7230 unveiled
Electronics / Consumer & Gadgets
Nov 25, 2009 |
3.6 / 5 (5) |
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Nokia today unveiled two new 3G slider phones, the Nokia 6700 slide and Nokia 7230, made for the design-conscious consumer and optimized for socializing and sharing with those closest to you.
Ubisoft steps up videogame fitness with virtual coach
Nov 22, 2009 |
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French videogame powerhouse Ubisoft will have a virtual fitness coach whipping Wii users into shape starting Tuesday.
Gadgets: Card reader helps you shop safer online
Electronics / Consumer & Gadgets
Nov 26, 2009 |
1 / 5 (1) |
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NetSecure Technologies SmartSwipe credit card reader is a new device to help Internet shoppers or small business owners.
Cassini Captures Ghostly Dance of Saturn's Northern Lights (w/ Video)
Space & Earth / Space Exploration
Nov 24, 2009 |
4.9 / 5 (10) |
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(PhysOrg.com) -- In the first video showing the auroras above the northern latitudes of Saturn, Cassini has spotted the tallest known "northern lights" in the solar system, flickering in shape and brightness ...
Top 10 tech toys for 2009
Electronics / Consumer & Gadgets
Nov 25, 2009 |
3 / 5 (4) |
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This year, I've grouped my list of Top 10 tech toys into price ranges. Keep in mind that the prices listed are the suggested retail, and you may be able to find better deals.
Gullies and Flow Features on Crater Wall
Space & Earth / Space Exploration
Nov 26, 2009 |
4.5 / 5 (2) |
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(PhysOrg.com) -- This image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter shows a sample of the variety and complexity of processes that may occur ...
Teachers begin using cell phones for class lessons
Nov 27, 2009 |
2 / 5 (2) |
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(AP) -- Ariana Leonard's high school students shuffled in their seats, eagerly awaiting a cue from their Spanish teacher that the assignment would begin. "Take out your cell phones," she said in Spanish.
China to launch second lunar probe: state media
Space & Earth / Space Exploration
Nov 27, 2009 |
5 / 5 (6) |
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China will launch its second moon orbiter next October, state media reported Friday, as it powers ahead with a space programme that has sparked concerns abroad.
Herschel takes a peek at the ingredients of the galaxies
Nov 27, 2009 |
4.8 / 5 (9) |
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(PhysOrg.com) -- The European Space Agency has today released spectacular new observations from the Herschel Space Observatory, including the UK-led SPIRE instrument. Spectrometers on board all three Hershel ...
Robo-chefs and fashion-bots on show in Tokyo
Nov 26, 2009 |
5 / 5 (4) |
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Forget the Transformers and Astroboy: Japan's latest robots don't save the world -- they cook snacks, play with your kids, model clothes, and search for disaster victims.
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