The Force Field Generator The Force Field Generator can create an impenatrable bubble around a person or persons within the range selected on the handle. The bubble is translucent and ranges from 5 feet to 15 feet in diameter. The field is generated by magnetically charging the plasma dome and then seperating the plasma into positive and negative strings and rearranging them in a sphere around its occupants. The only problem is the larger the field, the weaker it becomes.