Static electricity(静电学) The property of electric charge: 1.There are two kinds of electric charge,positive charge and negative charge. 2.Like charges repel.And unlike charge attract. 3.Free charge is quantified in positive or negative integral multiples of e. e=1.602*10-19C
Static electricity(静电学） The property of electric charge: 1. There are two kinds of electric charge, positive charge and negative charge. 2. Like charges repel. And unlike charge attract. 3. Free charge is quantified in positive or negative integral multiples of e. e=1.602*10-19 C
Fig.8.49 Millikan's oil-drop apparatus Fig.8.50 Millikan used a horizontally oriented parallel-plate capacitor to create the electric force because of its uniform electric field and the ease of controlling and calculating the electric field strength