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The November 1983 article stipulated using an "accurate stopwatch" to time the program execution on machines lacking a real-time clock: When applied to the faster machines, this would yield test results highly dependent on the reaction time of the individual operating the stopwatch.
A stopwatch is a timepiece designed to measure the amount of time that elapses between its activation and deactivation. A large digital version of a stopwatch designed for viewing at a distance, as in a sports stadium, is called a stop clock .
The stopwatch is more precise at measuring time intervals than the sundial because it has more "counts" (scale intervals) in each hour of elapsed time. Least count of an instrument is one of the very important tools in order to get accurate readings of instruments like vernier caliper and screw gauge used in various experiments.
The user starts the chronograph (stopwatch) at the instant the event is seen, and stops timing at the instant the event is heard. The seconds hand will point to the distance measured on a scale, usually around the edge of the face. The scale can be defined in any unit of distance, but miles or kilometers are most practical and commonplace. [30]
A chronograph is a watch with an added duration timer, often a stopwatch complication (as explained above), while a chronometer watch is a timepiece that has met an industry-standard test for performance under pre-defined conditions: a chronometer is a high quality mechanical or a thermo-compensated movement that has been tested and certified ...
The 1948 Olympics, however, continued to use Omega timing with a device called the 'Magic Eye', developed by British Race Finish Recording Co. Ltd. [10] The automatic times produced in the 1948 Olympics have never been released, but examination of the photos at the finish means that margins have been calculated to 1/100 second accuracy.
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In 1916 Edward Heuer's son, Charles-Auguste, introduced the "Mikrograph", the first stopwatch accurate to 1/100 of a second. This model was soon followed by the "Semikrograph", a stopwatch that offered 1/50 of a second timing, as well as a split-second function (which allows the user to determine the interval between two contestants or events).