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
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News tagged with camera
Atom Pinhole Camera Acts as a Shrinking Copy Machine
Jun 01, 2009 |
4.4 / 5 (20) |
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(PhysOrg.com) -- In 1983, Richard Feynman proposed the idea of a machine that could create smaller scale replicas of itself. Today, such a system is still a challenge, but a machine that can produce nanometer-sized ...
Latest 3D TV Technology Offers Interactive Control
Technology / Computer Sciences
Mar 19, 2009 |
4.9 / 5 (7) |
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(PhysOrg.com) -- Three-dimensional TV is now closer than ever to becoming a reality for consumers, and the latest research is investigating the full extent of 3D TV’s possibilities. In a recent study, researchers ...
Hubble's Deepest View of Universe Unveils Never-Before-Seen Galaxies (w/ Video)
Dec 08, 2009 |
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(PhysOrg.com) -- In 2004, Hubble created the Hubble Ultra Deep Field (HUDF), the deepest visible-light image of the Universe, and now, with its brand-new camera, Hubble is seeing even farther. This image was ...
Sony signs 3-D video deal for 2010 World Cup
Dec 04, 2009 |
5 / 5 (5) |
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(AP) -- The 2010 World Cup is going 3-D. Sony Corp. said Friday it has signed a deal with FIFA, the international football governing body, to record up to 25 World Cup games in 3-D - a technology that gives ...
Spacesuits with artificial intelligence may look for life on Mars
Space & Earth / Space Exploration
Nov 04, 2009 |
5 / 5 (7) |
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(PhysOrg.com) -- Astronauts may in future be wearing spacesuits equipped with artificial intelligence (AI) and digital eyes, turning them into what the researchers call cyborg astrobiologists.
Spider pill to seek out diseases
Oct 16, 2009 |
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(PhysOrg.com) -- A remotely controlled 'spider pill' with eight moving legs and a miniature camera may become the next tool of choice in diagnosing cancers of the stomach and colon.
Video camera that records at the speed of thought
Oct 12, 2009 |
4.2 / 5 (13) |
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(PhysOrg.com) -- European researchers who created an ultra-fast, extremely high-resolution video camera have enabled dozens of medical applications, including one scenario that can record 'thought' processes travelling along ...
Rebirth of an icon: Hubble's first images since Servicing Mission 4
Space & Earth / Space Exploration
Sep 09, 2009 |
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(PhysOrg.com) -- Astronomers today declared the NASA/ESA Hubble Space Telescope a fully rejuvenated observatory ready for a new decade of exploration, with the release of observations from four of its six ...
Doing More with Your Cell Phone
Electronics / Consumer & Gadgets
Aug 10, 2009 |
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(PhysOrg.com) -- As technology shrinks, and as it becomes possible to unplug and still conduct all of your business from a hand-held device, we demand more convenience. And there are two entities leading the ...
Hollywood places biggest 3-D bet yet on 'Avatar'
Jul 24, 2009 |
3.5 / 5 (4) |
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(AP) -- When James Cameron directed his first 3-D film, "Terminator 2: 3-D," for Universal Studios theme parks more than a decade ago, the bulky camera equipment made some shots awkward or impossible.
'Flexible camera' replaces lens with fiber web
Nanotechnology / Nanomaterials
Jul 07, 2009 |
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(PhysOrg.com) -- Imagine a soldier's uniform made of a special fabric that allows him to look in all directions and identify threats that are to his side or even behind him. In work that could turn such science ...
Microsoft unveils motion control for Xbox 360
Electronics / Consumer & Gadgets
Jun 01, 2009 |
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(AP) -- Gamers, get ready for your close-up.
Star-Forming Backbone of a Massive Structure in the Early Universe Photographed
May 20, 2009 |
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(PhysOrg.com) -- Using a special camera known as AzTEC developed by a research team led by Grant Wilson, astronomy professor at the University of Massachusetts Amherst, an international research group has ...
Stuck bolt, dead battery bedevil Hubble repairs
Space & Earth / Space Exploration
May 17, 2009 |
4.1 / 5 (9) |
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(AP) -- Spacewalkers' specially designed tools couldn't dislodge a balky bolt interfering with repairs Sunday at the Hubble Space Telescope, so they took an approach more familiar to people puttering around ...
Let there be light: Camera hooked up for Hubble
Space & Earth / Space Exploration
May 14, 2009 |
5 / 5 (9) |
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(AP) -- A pair of spacewalking astronauts overpowered a stubborn bolt and successfully installed a new piano-sized camera in the Hubble Space Telescope on Thursday, the first step to making the observatory ...
