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
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 ...
Studying a Star Before it is Born
Dec 04, 2009 |
4.7 / 5 (3) |
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(PhysOrg.com) -- The first phase of a star's formation are thought to begin deep inside a natal cloud of gas and dust. In the earliest stages, material coalesces under the influence of gravity into so-called ...
Gift Guide: A focus on HD video, at many prices
Electronics / Consumer & Gadgets
Dec 01, 2009 |
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It's easier than ever to shoot high-definition video. You can do it with traditional-style camcorders, of course, but also with cameras that also are designed to take still photos - from high-end "digital ...
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Gadgets: Gift ideas for your holiday shopping
Electronics / Consumer & Gadgets
14 hours ago |
3 / 5 (1) |
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Black Friday has come and gone and if you're like me, you barely made a dent in your holiday shopping list.
Tech accessories can spice up holiday list
Electronics / Consumer & Gadgets
Dec 04, 2009 |
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As much as I love buying big-ticket items such as TVs, computers, cell phones and cameras, I also love buying accessories for those items just as much, maybe even more.
Gift Guide: High-tech happiness for $100 or less
Electronics / Consumer & Gadgets
Dec 04, 2009 |
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(AP) -- No one's going to blame you for keeping holiday gifts minimal this year. But if you want to round out your handmade cards, scarves, pickles and jam with a gadget or gizmo, here are a handful of our ...
Spitzer Unveils Biggest Milky Way View at Adler Planetarium
Space & Earth / Space Exploration
Dec 04, 2009 |
5 / 5 (2) |
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(PhysOrg.com) -- The world's largest image of our Milky Way galaxy, taken by NASA's Spitzer Space Telescope, went on display this week at the Adler Planetarium in Chicago.
Honda's 'Personal-Neo Urban Transport' Concept
Dec 03, 2009 |
5 / 5 (1) |
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The Honda Personal-Neo Urban Transport (P-NUT) design study model demonstrates a futuristic concept for an ultra-compact and sophisticated city coupe, American Honda Motor announced at the 2009 Los Angeles ...
Samsung Announces the Premium I8910 HD Gold Edition
Electronics / Consumer & Gadgets
Dec 03, 2009 |
1 / 5 (1) |
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Samsung Electronics today announced the availability of the I8910 HD (Omnia HD, GT-I8910) Gold Edition. This premium version of the ground-breaking full touch screen smartphone features a luxurious new look ...
Futuristic 48-Core Intel Chip Could Reshape How Computers are Built (w/ Video)
Dec 03, 2009 |
4.2 / 5 (19) |
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(PhysOrg.com) -- Researchers from Intel Labs demonstrated an experimental, 48-core Intel processor, or "single-chip cloud computer," that rethinks many of the approaches used in today's designs for laptops, ...
Flight of fancy: MIT autonomous mini-helicopter solves one tough challenge
Dec 03, 2009 |
4.6 / 5 (13) |
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In its first 18 years, the Association for Unmanned Vehicle Systems International’s annual aerial-robotics competition posed four successive challenges, which robotics researchers had to meet using entirely ...
A Superbright Supernova That’s the First of Its Kind
Dec 02, 2009 |
4.7 / 5 (24) |
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(PhysOrg.com) -- An extraordinarily bright, extraordinarily long-lasting supernova named SN 2007bi, snagged in a search by a robotic telescope, turns out to be the first example of the kind of stars that first ...
Newly discovered star one of hottest in Galaxy (w/ Video)
Dec 02, 2009 |
4.7 / 5 (21) |
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(PhysOrg.com) -- Astronomers at The University of Manchester's Jodrell Bank Centre for Astrophysics have discovered one of the hottest stars in the Galaxy with a surface temperature of around 200,000 degrees ...
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