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
A pain in the neck: Researcher studies the effects of too much texting on college students
Nov 10, 2009 |
not rated yet |
0
The world record for fastest text message typing is held by a 21-year old college student from Utah, but his dexterous digits could mean serious injury later on. Most adults aged 18-21 prefer texting over e-mail or phone ...
Mars: Chaotic terrain between Kasei Valles and Sacra Fossae
Space & Earth / Space Exploration
Nov 06, 2009 |
4.8 / 5 (8) |
0
(PhysOrg.com) -- Mars Express flew over the boundary between Kasei Valles and Sacra Fossae and imaged the region, acquiring spectacular views of the chaotic terrain in the area.
Hubble Image Showcases Star Birth in M83, the Southern Pinwheel
Nov 05, 2009 |
4.6 / 5 (10) |
1
(PhysOrg.com) -- The spectacular new camera installed on NASA's Hubble Space Telescope during Servicing Mission 4 in May has delivered the most detailed view of star birth in the graceful, curving arms of ...
Spacesuits with artificial intelligence may look for life on Mars
Space & Earth / Space Exploration
Nov 04, 2009 |
5 / 5 (7) |
0
(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.
New Orleans jury: Dell liable in crime camera suit
Nov 02, 2009 |
4 / 5 (1) |
0
(AP) -- A jury found Dell Inc. liable Monday for $12.8 million in damages over unfair competition and conspiracy claims in a lawsuit involving the city's problematic crime camera surveillance program.
Safety study of capsule endoscopy in patients with implantable cardiac devices finds no interference
Oct 26, 2009 |
not rated yet |
0
A study of patients with implantable cardiac devices such as pacemakers, implantable defibrillators or left ventricular assist devices found that performing capsule endoscopy in these patients is safe and that the devices ...
The lotus's clever way of staying dry (w/ Video)
Oct 22, 2009 |
4.7 / 5 (3) |
1
An ancient Confucian philosopher once said, "I love the lotus because while growing from mud, it is unstained."
Gadgets: WD media player makes watching your own HD video easier
Electronics / Consumer & Gadgets
Oct 22, 2009 |
3 / 5 (1) |
0
Producing your own high-definition video has become increasingly easier with today's line of HD video cameras. But transferring the content from your computer to a TV can be a challenge.
Assuring quality in lightweight construction
Oct 21, 2009 |
not rated yet |
0
Aerospace, automotive and airplane construction count on lightweight construction. But to make sure that lightening the load does not come at the cost of safety, Fraunhofer researchers are working on new quality assurance ...
The Physics Of A Bump In A Rug
Oct 20, 2009 |
3.7 / 5 (7) |
0
Scientists often have to make sacrifices for their work. Physicist Dominic Vella chopped his bathroom rug into strips, and L. Mahadevan's coauthor ran off with his bookshelf. With these sacrifices, these two ...
Campus camera network part of new study
Oct 20, 2009 |
not rated yet |
0
(PhysOrg.com) -- B.S. Manjunath came up with the idea for his latest research project during a faculty meeting a few years ago. The UC Santa Barbara professor of electrical & computer engineering spotted a ...
LCROSS Captures All Phases of Centaur Impact
Space & Earth / Space Exploration
Oct 18, 2009 |
4 / 5 (10) |
0
(PhysOrg.com) -- NASA’s Lunar CRater Observation and Sensing Satellite (LCROSS) was a smashing success, returning tantalizing data about the Centaur impact before the spacecraft itself impacted the surface ...
Spider pill to seek out diseases
Oct 16, 2009 |
4.8 / 5 (8) |
0
(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.
Findings about veracity of peripheral vision could lead to better robotic eyes (w/ Video)
Oct 15, 2009 |
4 / 5 (3) |
1
Two Kansas State University psychology researchers have found that although central vision allows our eyes to discern the details of a scene, our peripheral vision is most important for telling us what type of scene we're ...
3D CMOS camera for your mobile?
Oct 14, 2009 |
3.8 / 5 (5) |
0
(PhysOrg.com) -- European researchers have created a world-leading camera in CMOS that can record photons at a million times a second. Best of all, it will be really cheap to manufacture, offering applications ...
