News tagged with camera

Related topics: iphone , nasa , digital camera

Giving emotions to virtual characters

Researchers at the Autonomous University of the State of Mexico (UAEM) were able to simulate human facial expressions in virtual characters and use them in order to create better environments within a virtual ...

Jul 31, 2014
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In pitching injuries, the elbow is connected to the hip bone

(Medical Xpress)—New University of Florida research suggests that a pitcher's elbow injury could be linked to movement in the hips. Dr. Kevin W. Farmer, an assistant professor in the UF department of orthopaedics and rehabilitation, ...

May 01, 2014
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US approves pill camera to screen colon (Update)

A kinder, gentler approach to one of the most dreaded exams in medicine is on the way: U.S. regulators have cleared a bite-size camera to help screen patients who have trouble with colonoscopies.

Feb 03, 2014
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Special camera detects tumors

Tumor removal surgeries pose a great challenge even to skillful and experienced surgeons. For one thing, tumor margins are blending into healthy tissue and are difficult to differentiate. For another, distributed ...

Nov 04, 2013
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Colorectal cancer screening works

Screening for colorectal cancer (CRC) in European countries is highly effective in reducing mortality from the disease. Some of the resources currently being devoted to breast and prostate screening programmes, where the ...

Sep 27, 2013
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Merck back to profits on lower one-time costs

German drug and high-tech materials company Merck KGaA bounced back from losses this time last year to record a net profit of 316 million euros ($420 million) in the second quarter.

Aug 06, 2013
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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.

This text uses material from Wikipedia licensed under CC BY-SA