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
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 ...
Stretchable silicon camera next step to artificial retina
Aug 06, 2008 |
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(PhysOrg.com) -- By combining stretchable optoelectronics and biologically inspired design, scientists have created a remarkable imaging device, with a layout based on the human eye.
Astronomers use ultra-sensitive camera to measure size of planet orbiting star
Dec 11, 2008 |
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A team of astronomers led by John Johnson of the University of Hawaii's Institute for Astronomy has used a new technique to measure the precise size of a planet around a distant star. They used a camera so ...
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 ...
Galaxy Cores to Crash in a Few Million Years
Mar 16, 2009 |
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(PhysOrg.com) -- A new image from NASA's Spitzer Space Telescope offers a rare view of an imminent collision between the cores of two merging galaxies, each powered by a black hole with millions of times the ...
Atom Pinhole Camera Acts as a Shrinking Copy Machine
Jun 01, 2009 |
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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 ...
Pioneering images of both martian moons (w/ Video)
Space & Earth / Space Exploration
Dec 11, 2009 |
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(PhysOrg.com) -- For the very first time, the martian moons Phobos and Deimos have been caught on camera together. ESA's Mars Express orbiter took these pioneering images last month. Apart from their ‘wow’ ...
MIT Student Takes Pictures from Space on Less Than $150 (w/ Video)
Oct 02, 2009 |
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(PhysOrg.com) -- When we think of taking pictures of the earth from space, we assume that a great deal of money has to be spent on high-tech equipment and complex vehicles to get the camera up there. But, ...
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 ...
A Second Look at Apollo 11
Space & Earth / Space Exploration
Oct 01, 2009 |
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A month after LROC's first image of the Apollo 11 landing site was acquired, LRO passed over again providing the LROC instrument a new view of the historic site. ...
The Memoir: Samsung, T-Mobile USA Introduce New 8-Megapixel Camera Phone
Electronics / Consumer & Gadgets
Feb 06, 2009 |
4 / 5 (14) |
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Samsung Mobile and T-Mobile USA today announced the upcoming availability of the Samsung Memoir, a full touch-screen mobile phone equipped with an 8-megapixel camera and premium multimedia features, placing ...
'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 ...
Video camera that records at the speed of thought
Oct 12, 2009 |
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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 ...
World's fastest and most sensitive astronomical camera
Jun 18, 2009 |
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The next generation of instruments for ground-based telescopes took a leap forward with the development of a new ultra-fast camera that can take 1,500 finely exposed images per second even when observing extremely ...
A Glimpse of the Future MEMS-based Storage: Totally Green & Thumbnail Size
Jun 23, 2009 |
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The University of Twente--Enschede, The Netherlands published newly conferred PhD Mohammed Ghiath Khatib's thesis, "MEMS-based Storage Devices: Integration in Energy-Constrained Mobile System". The new MEMS, ...
