F-Ray
From Futurama Wiki
The F-Ray was an invention created by Professor Farnsworth. The F-Ray emitted a neutrino beam which allowed the ray's user to see through anything, including metal; because of this, it was even more powerful than the X-Ray. Its nuclear power was such that the professor wore a full body radiation suit while using it. The professor claims that it might even affect people over 10 feet away; although Fry has experienced direct exposure without any side effects (except possibly extermination of his sperm). It is strong enough to pop balloons and blimps.
