- Least Count
The "Least Count" of any measuring equipment is the smallest quantity that can be measured accurately using that instrument.Thus Least Count indicates the degree of accuracy of measurement that can be achieved by the measuring instrument.
All measuring instruments used in physics have a least count. A meter ruler's least count is 0.1 centimeter; an electronic scale has a least count of 0.001g, although this may vary; a vernier
caliperhas a least count of 0.02 millimeters, although this too may vary; and micrometer screwgauge's least count is 0.01 millimeter and of course a conventional ruler has .01m.
The Least Count is the discrimination of a vernier instrument. All measuring instruments used in the subject of physics can be used to measure various types of objects, but all do so without considering the detail of accuracy.
No measuring instrument used in physics is accurate and always has an error when readings are taken. Even the latest technology used in measuring objects also have an error where reading are concerned. Various names can be given to this error. The Least Count, uncertainty or maximum possible error are the terms normally used in a physics course, although this may vary with different syllabuses.
The error made in an instrument can be compared with another by calculating the percentage uncertainty of each of the readings obtained. The one with the least uncertainty is always taken to measure objects, as all measurements are required with accuracy in mind. The percentage uncertainty is calculated with the following formula:(Maximum Possible error/Measurement of the Object in question) *100
The smaller the measurement, the larger the percentage uncertainty.The least count of an instrument is indirectly proportional to the accuracy of the instrument.
Wikimedia Foundation. 2010.
Look at other dictionaries:
Count Morzin — was an aristocrat of the Austrian Empire during the 18th century. He is remembered today as the first person to employ the composer Joseph Haydn as his Kapellmeister, or music director. The first few of Haydn s approximately 106 symphonies were… … Wikipedia
Count Basie — from the 1955 film Rhythm and Blues Revue Background information Birth name William James Basie … Wikipedia
Count Duckula — Genre Animated series Created by Cosgrove Hall Directed by Chris Randall … Wikipedia
Count Belisarius — is a historical novel by Robert Graves, first published in 1938, recounting the life of the Byzantine general Belisarius (AD 500 AD 565). Just as Graves Claudius books (I, Claudius and Claudius the God and his Wife Messalina) were based upon, for … Wikipedia
Count Floyd — is a fictional character featured in television and played by comic actor Joe Flaherty. He is a fictional horror host in the tradition of TV hosts on local television in the United States and Canada. The Count Floyd character originated on the… … Wikipedia
Count Dracula (1977) — Count Dracula Louis Jourdan as Count Dracula Directed by Philip Saville Produced by … Wikipedia
Count's Feud — (1534–36) Part of Protestant Reformation Date 1534–36 Location Denmark Result Vict … Wikipedia
Count Me In (charity) — Count Me In (full name: Count Me In for Women s Economic Independence) is a charitable organization that provides financial assistance and business coaching and consulting services to woman owned businesses. The assistance is provided through… … Wikipedia
Count Zero — Cover of first edition (hardcover) … Wikipedia
Count Leopold Joseph von Daun — (or Dhaun) (September 24, 1705 – February 5, 1766), later Prince of Thiano, Austrian field marshal, was born at Vienna, as son of Count Wirich Philipp von Daun. Contents … Wikipedia