In a gun-type bomb, Uranium-235 is the fuel. In an implosion bomb, Plutonium-239 is the fuel. A fusion-boosted atomic bomb uses the implosion design, with the addition of gaseous tritium (Hydrogen-3). Producing the appropriate amounts of fuel for bombs is expensive, time-consuming, and difficult.
What does an inhibitor switch do? An inhibitor switch basically tells your vehicle whether its in motion or in park. It can tell the car to park or to go into first gear etc.
Inside your vehicle, you will find a power mirror switch that controls its every move. It's really a thing of beauty to be able to sit in the climate controlled car or truck and dance your passenger side mirror around like you are the puppet master of automotive mirrors.