what is backlash error in a screw gauge?
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The error cause by wearing or tearing of the screw gauge is called backlash error....
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Sometimes due to wear and tear of threads of screw, it is observed that on reversing the direction of rotation of the thimble, the tip of the screw does not start moving in the opposite direction at once, but it remains stationary for a part of rotation. This causes error in the observation which is called the blacklash error.
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why is the difference between the duration of day and night hardly felt at kannyakumari but not so in kashmir?
As equator receives direct sunlight, the duration between day and night would hardly be felt at Kanyakumari. On the other hand, Kashmir is at 37°N latitude, which means that it is 37 degrees away from the equator or it is 37 degrees away from the area which receives direct sunlight.
It's in my bro geo textbook
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Wc Sissy
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