Engineering
Artificial intelligence (AI) plays an important role in many systems, from predictive text to medical diagnoses. Inspired by the human brain, many AI systems are implemented based on artificial neural networks, where electrical ...
Jun 7, 2022
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487
Engineering
The oil industry, pharmaceutical companies and bioreactor manufacturers all face one common enemy: bubbles. Bubbles can form during the manufacturing or transport of various liquids, and their formation and rupture can cause ...
Jul 19, 2021
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165
Consumer & Gadgets
The coronavirus epidemic has brought virtually nothing other than misery, pain, fear and disruption. Though we may still be far off from the day we can close the book on this scourge, we are now inching towards what seems ...
Computer Sciences
In an era of digital eavesdropping where hackers employ a variety of means to take over built-in video cameras, peruse personal digital data and snoop on cellular conversations, researchers have finally seen the light.
Hardware
A bug in a protocol used by virtually all Internet of Things devices exposes millions of users to potential attack, a researcher reported Monday. The fault centers on the Universal Plug and Play protocol, a 12-year-old implementation ...
Consumer & Gadgets
Raspberry Pi's new high quality camera doesn't sport a fancy name—it's actually called "High Quality Camera"—but it packs some new features do-it-yourselfers are sure to enjoy, and it's being offered at Raspberry's typical ...
Engineering
Wearable cameras such as Snap Spectacles promise to share videos of live concerts or surgeries instantaneously with the world. But because these cameras must use smaller batteries to stay lightweight and functional, these ...
Apr 19, 2018
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581
Robotics
Sick of struggling with incomprehensible instructions and a baffling array of planks and screws? Help is at hand in the form of a new robot that can assemble an IKEA chair in minutes.
Apr 19, 2018
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308
Engineering
Light lets us see the things that surround us, but what if we could also use it to see things hidden around corners?
Oct 10, 2017
2
156
Engineering
(Tech Xplore)—A team of researchers with the University of Stuttgart has used advanced 3-D printing technology to create an extremely small camera that uses foveated imaging to mimic natural eagle vision. In their paper ...
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
