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+//Chapter-5,Example5_7_3,pg 5-27
+
+
+uncertainty=1*10^-4                                   //as uncertainty is 0.01%
+
+m=9.1*10^-31                                         //mass of an electron
+
+h=6.63*10^-34                                        //Plancks constant
+
+v=4*10^5                                             //speed of an electron
+
+delta_v=uncertainty*v                                             //error in measurement of speed 
+
+delta_x=h/(4*%pi*m*delta_v)                                    //By Heisenberg's uncertainty priciple
+
+printf("\nThe accuracy in position of an electron  Delta_x = %.8f m\n",delta_x)