Camera

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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.


News tagged with camera

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Sony hopes online service will build brand loyalty (AP)

Sony hopes online service will build brand loyalty

Technology / Business

created Nov 20, 2009 | popularity not rated yet | comments 0

(AP) -- Sony's new online service connecting the whole range of its gadgets to downloadable content like movies and games should help build brand loyalty, a top executive said Friday.


Second Planned Extrication Drive is Straight Ahead Again

Second Planned Extrication Drive is Straight Ahead Again

Space & Earth / Space Exploration

created Nov 19, 2009 | popularity 3.8 / 5 (4) | comments 0

(PhysOrg.com) -- Because the first extrication drive for Spirit, on Sol 2088 (Nov. 17), stopped as soon as it began due to an exceeded tilt limit, the plan for an extrication drive on Sol 2090 (Nov. 19) wil ...


High-tech holiday gift ideas for $50 and $100

Electronics / Consumer & Gadgets

created Nov 18, 2009 | popularity not rated yet | comments 1

Picking a Christmas gift for the nerd in your life is never easy. In the holiday stampede, it's all too easy to end up with an outdated gadget or obsolete program. And mistakes can be costly.


First view of Earth as Rosetta approaches home

Rosetta sees a living planet

Space & Earth / Space Exploration

created Nov 13, 2009 | popularity 5 / 5 (3) | comments 0

(PhysOrg.com) -- Images and data taken just before closest approach were downloaded this morning, and they show the lights of North America in the night and a glowing Southern Hemisphere.


A pain in the neck: Researcher studies the effects of too much texting on college students

Medicine & Health / Health

created Nov 10, 2009 | popularity not rated yet | comments 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

Mars: Chaotic terrain between Kasei Valles and Sacra Fossae

Space & Earth / Space Exploration

created Nov 06, 2009 | popularity 4.8 / 5 (8) | comments 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

Hubble Image Showcases Star Birth in M83, the Southern Pinwheel

Space & Earth / Astronomy

created Nov 05, 2009 | popularity 4.6 / 5 (10) | comments 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

Spacesuits with artificial intelligence may look for life on Mars

Space & Earth / Space Exploration

created Nov 04, 2009 | popularity 5 / 5 (7) | comments 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

Technology / Business

created Nov 02, 2009 | popularity 4 / 5 (1) | comments 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

Medicine & Health / Research

created Oct 26, 2009 | popularity not rated yet | comments 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

The lotus's clever way of staying dry (w/ Video)

Physics / Condensed Matter

created Oct 22, 2009 | popularity 4.7 / 5 (3) | comments 1

An ancient Confucian philosopher once said, "I love the lotus because while growing from mud, it is unstained."


WD TV HD media player

Gadgets: WD media player makes watching your own HD video easier

Electronics / Consumer & Gadgets

created Oct 22, 2009 | popularity 3 / 5 (1) | comments 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

Technology / Engineering

created Oct 21, 2009 | popularity not rated yet | comments 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

The Physics Of A Bump In A Rug

Physics / General Physics

created Oct 20, 2009 | popularity 3.7 / 5 (7) | comments 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

Campus camera network part of new study

Technology / Engineering

created Oct 20, 2009 | popularity not rated yet | comments 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 ...