16.Analysis of Errors-I

As mentioned in my earlier post , we start this post with the introduction of two new parameters in error analysis namely – ACCURACY & PRECISION. 1)Accuracy – • Accuracy of a measurement tells us how close the measured value (xi),is close to the true/accepted value. • Accuracy is measured in Relative error , Absolute error. 2)Precision – • It…

15.Calculation of Errors.

In the last post we discussed how measurements are subject to errors and the different types of errors that one might come across.In this post we shall discuss how to measure these errors and how to present our data with specifying errors in it. We begin our discussion with the concept of  ‘True value –…

14.Errors

  As mentioned in the last post, the unawareness of uncertainties in our measurement renders our experimental data insignificant.While measuring any quantity, there can be various errors incorporated in the measurement and the knowledge of these errors is essential to get accurate and precise results.Thus, today we start our discussion of Analytical Chemistry with a…

13.SI Units.

As we know ,science is studied all around the world.Thus, it is essential that we have a standard system for measurements and have units for physical quantities which are accepted worldwide.Otherwise, it will be too difficult for people to keep a tab of different conventions and units and they will have to constantly convert quantities…