Experiment captures why pottery forms are culturally distinct

Potters of different cultural backgrounds learn new types differently, producing cultural differences even in the absence of differential cultural evolution. Kobe University-led research, published in PNAS Nexus, has implications ...

AI-enabled bio-loggers capture rare bird behavior

For centuries, naturalists have braved trackless forests, windy clifftops, and the cramped confines of blinds and submarines, hoping to capture rare behaviors that might reveal important aspects of animal biology and ecology. ...

Blink and you'll miss these plants shooting their seeds

If you happened upon a witch hazel plant in the forest, you might describe it as a sweet-smelling shrub with crinkly ribbon-like petals. But to Duke University graduate student Justin Jorge, it's a howitzer.

Video: The secret social lives of sharks

Great white sharks gather seasonally around Mexico's Guadalupe Island—and some like to hang out together, according to research led by FIU marine scientist Yannis Papastamatiou.

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Video camera

A video camera is a camera used for electronic motion picture acquisition, initially developed by the television industry but now common in other applications as well. The earliest video cameras were those of John Logie Baird, based on the electromechanical Nipkow disk and used by the BBC in experimental broadcasts through the 1930s. All-electronic designs based on the cathode ray tube, such as Vladimir Zworykin's Iconoscope and Philo T. Farnsworth's Image dissector, supplanted the Baird system by the 1940s and remained in wide use until the 1980s, when cameras based on solid-state image sensors such as CCDs (and later CMOS active pixel sensors) eliminated common problems with tube technologies such as burn-in and made digital video workflow practical.

Video cameras are used primarily in two modes. The first, characteristic of much early television, is what might be called a live broadcast, where the camera feeds real time images directly to a screen for immediate observation; in addition to live television production, such usage is characteristic of security, military/tactical, and industrial operations where surreptitious or remote viewing is required. The second is to have the images recorded to a storage device for archiving or further processing; for many years, videotape has been the primary format used for this purpose, but optical disc media, hard disk, and flash memory are all increasingly used. Recorded video is used not only in television and film production, but also surveillance and monitoring tasks where unattended recording of a situation is required for later analysis.

Modern video cameras have numerous designs and uses, not all of which resemble the early television cameras.

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