41.   In this variant of a conventional liquid-crystal display, a thin layer of plasma gas behind the screen receives an electrical charge that activates the colored crystals.

42.   Inside the pacemaker cell, where the positively-charged sodium ions leak in, the electrical charge gets more positive.

43.   Instead of electrical charge, hard disks store data in what is essentially a vast array of tiny magnets.

44.   Most electrical discharges move sideways within or between clouds, but electrical charges can also flow to the ground in familiar flashes of lightning.

45.   Neurons are reservoirs of electrical charge.

46.   Once the molecules pass out, they are given an electrical charge and then separated once again with an ion mobility spectrometer.

47.   Petrenko found that the electrical charge on the surface of ice, including snow crystals, creates an opposite electrical charge on the surface of anything the ice contacts.

48.   Positive electrical charges also build on the ground.

49.   Physicists believe every one of the fundamental particles that make up the universe has an antimatter twin, with the same characteristics but the opposite electrical charge.