Consumer & Gadgets

CNET names 2019's top tech products of the year

A ton of new tech came flying at us again in 2019. But weeding out the minor upgrades and the products that aren't ready for prime time from the stuff that's actually worth your hard-earned money is what CNET's all about. ...

Engineering

New coating hides temperature change from infrared cameras

An ultrathin coating developed by University of Wisconsin-Madison engineers upends a ubiquitous physics phenomenon of materials related to thermal radiation: The hotter an object gets, the brighter it glows.

Software

Google engineers raise the flag on AR depth, seek builders

So, a smartphone camera is just good for taking snapshots? Don't bring such talk to Google's augmented reality engineers. Blending the real and the virtual—-and winning special props for blending the real with the virtual—is ...

Hi Tech & Innovation

Intelligent camera automatically detects roadside bombs

Roadside bombs are sneaky and effective killers. They are easy to manufacture and hide, making it the weapon of choice for insurgents and terrorists across the world. Finding and disabling these lethal devices is very difficult. ...

Consumer & Gadgets

Before you buy, consider privacy please

This weekend, many folks will be poring over retail circulars, online ads and promotions, doing their research to get ahead on the best deals for Black Friday gifts.

Business

Watch this: China surveillance tech seeks to go global

Chinese firms are omnipresent at a Paris homeland security trade show, capitalising on their vast experience in developing surveillance systems for Beijing to conquer the global market despite concerns the technology has ...

Security

Team saw how an attacker could hijack Android camera for spyfest

Android camera security threat, disclosed and since addressed, had spy vulnerabilities. These were fixed by Google and Samsung with a patch rolled out for Pixel and Samsung devices The recent headlines surrounding the flaw ...

Security

Facial recognition makes subtle advance in Britain

The experiment was conducted discreetly. Between 2016 and 2018, two surveillance cameras were installed in the Kings Cross area of London to analyse and track passers-by using facial recognition technology.

Telecom

How hackers could use Wi-Fi to track you inside your home

As connected devices such as voice assistants, security cameras, and smart appliances grow in popularity, the homes and offices where they are installed become increasingly filled with a dense web of Wi-Fi signals.

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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