Uncertainty analysis of the curvature radius of Newton's rings with replacing the diameter by chord length
In the experiment of Newton's ring,measuring the diameter of interference ring is the key and diffi-cult step.It is confirmed in this paper that the type B uncertainty of the curvature radius of Newton's rings is affected when the parameter measured is the chord length rather than the diameter.The type B uncertainty can not be ig-nored when the linear correlation coefficient approaches to 1.In addition,the advantages are analyzed when measur-ing the chord length instead of the diameter on the basis of theoretical analysis,the method of calculating the type B uncertainty is also given.
newton's ringdiameter of interference ringchord lengthlinear fitting
万方数据
维普
