News tagged with camera
Lymphatic fluid takes detour
When tumours metastasise, they can block lymphatic vessels, as researchers from ETH Zurich have discovered using a new method. The lymphatic fluid subsequently has to find a new path through the tissue. Such ...
Medical research
May 20, 2013 |
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Drivers education for older drivers remains for 2 years, HF/E researcher finds
In seeming contrast to the notion that the elderly often have memory problems, a new study from an HF/E researcher finds driver retraining to be an effective strategy for improving the safe-driving habits of older drivers ...
Health
Apr 26, 2013 |
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Memory, the adolescent brain and lying: The limits of neuroscientific evidence in the law
Brain scans are increasingly able to reveal whether or not you believe you remember some person or event in your life. In a new study presented at a cognitive neuroscience meeting today, researchers used fMRI brain scans ...
Neuroscience
Apr 16, 2013 |
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Researchers design respirators for children with neuromuscular diseases
TU Delft is developing a special respirator for children with a neuromuscular disease. The Sporters in Actie foundation collected €100,000 for research on this breathing mask during the 'Greatest Golf Tournament ...
Diseases, Conditions, Syndromes
Apr 15, 2013 |
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Scientists used iPhone to diagnose intestinal worms
Scientists used an iPhone and a camera lens to diagnose intestinal worms in rural Tanzania, a breakthrough that could help doctors treat patients infected with the parasites, a study said on Tuesday.
Diseases, Conditions, Syndromes
Mar 12, 2013 |
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New bowel cancer test gets green light with the public
Almost everyone (98 per cent) who had the new bowel cancer test – soon to become part of the national screening programme – said they were glad to have gone through the experience, according to a study1 published in the ...
Cancer
Feb 18, 2013 |
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Cell phone cameras improve self-reported dietary recall
(HealthDay)—Pictures taken on cell phone-based digital cameras can function as a memory prompt to more accurately recall fruit and vegetable intake, according to a study published in the February issue ...
Health
Feb 15, 2013 |
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New modeling approach transforms imaging technologies
Researchers are improving the performance of technologies ranging from medical CT scanners to digital cameras using a system of models to extract specific information from huge collections of data and then ...
Medical research
Feb 05, 2013 |
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Wearable cameras provide new insight into lifestyle behaviors and health
Understanding the relationships between lifestyle behaviors and health outcomes can be enhanced by the use of wearable cameras, concludes a collection of studies in a special theme issue of the American Jo ...
Health
Feb 05, 2013 |
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Surgeon, optical scientist collaborate on surgery camera
(Medical Xpress)—Dr. Mike Nguyen, a urologist and UA associate professor of surgery, and Hong Hua, a UA professor of optical sciences, have teamed up with the goal of creating a camera that will allow surgeons ...
Surgery
Jan 17, 2013 |
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Analyzing babies' expressions could help children at risk for developmental disorders
Parents and babies smile, laugh and coo at each other, but scientists still have a lot of questions about how these interactions help infants develop.
Psychology & Psychiatry
Jan 08, 2013 |
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Faster help for stroke victims
Scientists have developed a quick, easy and cheap vision test to find out which part – and how much – of the brain of a stroke victim has been damaged, potentially enabling them to save more lives.
Neuroscience
Jan 04, 2013 |
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Case study validates teleconcussion
A program at Mayo Clinic using telemedicine technology is showing promise for patients with concussions in rural Arizona. A case study published in the December 2012 issue of Telemedicine and e-Health validates "teleconcussion" ...
Health
Nov 19, 2012 |
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Activating the 'mind's eye': Scientists teach blind to read, recognize objects with sounds (w/ Video)
Common wisdom has it that if the visual cortex in the brain is deprived of visual information in early infanthood, it may never develop properly its functional specialization, making sight restoration later ...
Neuroscience
Nov 07, 2012 |
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Taiwan prosecutor: Cancer patient set deadly fire
(AP)—A nursing home resident upset about being ill with cancer confessed to setting a fire that killed 12 fellow patients, most of them bedridden and too frail to escape, authorities in Taiwan said.
Health
Oct 24, 2012 |
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Camera
A 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.
