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There is a type of automatic timer manufactured by Kaiser, Philips, and others that by means of a photoelectric sensor (like the one in the photo or mounted inside the easel), is capable of regulating the exposure time according to the light projected by the enlarger, through the negative, on the photographic paper, magnitude inversely ...
The device used was the Löbner camera-timer. In 1932 three systems were used: official hand timing, hand started photo-finish times, and the Gustavus Town Kirby timing device, which was designed by Kirby to determine the correct order of finish in horse races. The official report for 1932 Olympics states: "In addition to hand timing, two ...
A manual self-timer, 2011. A manual self-timer mounted on a film camera, 2011. A self-timer drive mode button on a Canon digital camera, 2008. Robert Faries: Shutter tripper for Camera's, US Patent 690,939, January 14, 1902. A self-timer is a device on a camera that gives a delay between pressing the shutter release and the shutter's firing. It ...
The timer may switch equipment on, off, or both, at a preset time or times, after a preset interval, or cyclically. A countdown time switch switches power, usually off, after a preset time. A cyclical timer switches equipment both on and off at preset times over a period, then repeats the cycle; the period is usually 24 hours or 7 days.
A typical kitchen timer. A timer or countdown timer is a type of clock that starts from a specified time duration and stops upon reaching 00:00. An example of a simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software.
The Intel 8253 PIT was the original timing device used on IBM PC compatibles.It used a 1.193182 MHz clock signal (one third of the color burst frequency used by NTSC, one twelfth of the system clock crystal oscillator, [1] therefore one quarter of the 4.77 MHz CPU clock) and contains three timers.
The Green Brook Flood Control Project in Somerset County in central New Jersey was first proposed in the early 1970s in the wake of two major floods in June 1971 and August 1973, which caused millions of dollars of property damage and several deaths along the Green Brook and Raritan Rivers.
Green Brook Park is a 100-acre (40 ha) county park along the Green Brook, a tributary of the Raritan River, in the city of Plainfield in Union County, New Jersey.Designed by the Olmsted Brothers, it was added to the National Register of Historic Places on May 14, 2004, for its significance in landscape architecture.