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Hand timing was used until 1975 and in 1980, while in all other years fully automatic timing was used. The race was not held in 1983 or from 1986 to 1993. The women's race began in 1994. Official relay splits were published by Flash Results beginning in 2008. [1]
The NCAA Men's Division I Indoor Track and Field Championship is an annual collegiate indoor track and field competition for men organised by the National Collegiate Athletic Association.
Jenny Barringer set collegiate records in six events representing the Colorado Buffaloes, though none of them still stand Elijah Hall posing with the clock after setting a collegiate record of 20.02 seconds in the indoor 200 m, a mark that also stands as the American record and the No. 2 performance of all time
In terms of judging a person's speed, the best method of timing is through lasers which start and stop the times when passed through. A laser start (from a stationary position) is more accurate for measuring pure speed as it does not register a runner's reaction time, however, this method of timing a 40-yard dash can affect the accuracy by as much as 0.5 seconds with the manual stopwatch method.
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Light beam timing system (the two lenses extended to the right of the stand) Fully automatic time (abbreviated FAT) is a form of race timing in which the clock is automatically activated by the starting device, and the finish time is either automatically recorded, or timed by analysis of a photo finish.
But many meets displayed the converted marks accurate to the hundredth making the results look like they were taken with fully automatic timing. In these cases, some meets have displayed a 4 or a 0 in the hundredths column for all races. When detected, reports of these times are followed by a "c" or ' to indicate converted times.
Event Time Name Nationality Date Meet Location Ref 50m freestyle: 20.91 WR: César Cielo Brazil 18 December 2009: Brazilian Championships São Paulo, Brazil [1] [2]100m freestyle