Take a look at the following sketch representing a rotating neutron star that is beaming radiation as a pulsar. "a" represents a bar magnet - something we are familiar with - with a north and south magnetic pole - with the magnetic field emanating from it. this field is indicated by the dashed curving lines close to the neutron star "c" and the solid lines with arrows farther away "d". the spiraling of electrons in the magnetic field is shown at "b". which of the following choices correctly ranks the source of the highest to lowest energy radiation.

the force on the thing and the distance the force moves the thing

does anyone know or what?

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