1.   Even physics does not understand the nature of an electron and electrical charge.

2.   He picks up sensations, like electrical charges, from the hard inner walls that contain him.

3.   Instead of batteries, it is powered by a capacitor which stores an electrical charge good for about an hour of ringing.

4.   Such electrical charges are involved in the transport of materials across cell membranes, and in the conduction of nerve impulses.

5.   The atoms of the two metals have similar sizes and carry the same electrical charge.

6.   The electrical charge used by neurons is carried by ions-those electrically charged atoms mentioned previously.

7.   The proton has positive electrical charge, the neutron has none.

8.   These channels let in a flood of even more positive ions, which obliterates the electrical charge at that spot.

9.   To take a simple example, the important subatomic particle called the electron has a negative electrical charge.

10.   Two positive electrical charges repel each other.