Sunday, December 5, 2010

MEASUREMENT OF LENGTH

2.3 MEASUREMENT OF LENGTH

You are already familiar with some direct methods for the measurement of length. For example, a metre scale is used for lengths from 10-3 m to 102 m. A vernier callipers is used for lengths to an accuracy of 10-4 m. A screw gauge and a spherometer can be used to measure lengths as less as to 10-5 m. To measure lengths beyond these ranges, we make use of some special indirect methods.


Related Post

No comments: