Secondary roentgen radiation from wax, Al, Fe and Pb at tube voltages between 40 and 170 kV.
D000535:Aluminum; D006801:Humans; D007501:Iron; D007854:Lead; D011827:Radiation; D014885:Waxes; D014965:X-Rays
D014885:Waxes; D007854:Lead; D000535:Aluminum; D007501:Iron
ALUMINUM; IRON; LEAD; ROENTGEN RAYS; WAXES