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Two clocks are being tested against a standard clock located in a national laboratory. At 12:00:00 noon by the standard clock, the readings of the clocks are : {:(1,"Clock 1", "Clock 2"),("Monday ", 12:00:06, 10:15:08),("Tuesday",12:01:25,10:14:59),("Wednesday " ,11:59:06,10:15:07),("Thursday" ,12:01:50,10:15:07),("Friday" ,11:59:25,10:14:42),("Saturday",12:01:40,10:15:14),("Sunday" ,12:01:40,10:15:21):} If you are doing an experiment that requires 'precisiom timme interval" measurements, which of the wo clocks will you preler ? |
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Answer» Solution :The range of viriation over the Neven days of OBSERVATIONS is 164s for CLOCK-1. and 32 s for clock 2. The average reading of clock I is much closer to thestandard time than the average reading of clock 2. The important point is that a clock is ZERO error is not as significant tor precision work as its variation. because a zero -error can always be easily corrected . Hence clock 2 is to be PREFERRED to clock 1. |
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