A voltage difference is applied between the wire and the box so that an electric field is created between the wire and the box's shell. When a radiation particle travels through the gas in the box, it ionizes the originally electrically neutral gas. Therefore, for a short period of time there exists an electrical current while newly produced ions and electrons travel towards correspondingly charged conductors. The electrical current is registered: the higher the current, the more radiation there is in the area.

momentum of soft ball three times less than baskey ball

your answer is, orbit around the nucleus

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia